The 365 Days of Astronomy

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From September 2025.

Today's 2 topics:

- Dr. Bill Cooke of NASA's Meteoroid Environment Office reports that on June 26, 2025 shortly after noon a beachball sized meteoroid traveling at approximately 30,000 miles per hour broke up about 27 miles above the town of West Forrest, Georgia.

- Astronomers have discovered some 1.4 million asteroids. Approximately 35,000 of these space rocks come near Earth. Less than 40 of them are classified as being Atira asteroids whose orbits lie entirely within the Earth's orbit about the Sun. Only one of these, asteroid number 594913 named 'Ayló'chaxnim (eye-LAW-chax-nim) has an orbit which is entirely within the orbit of the planet Venus.

[Editor's note: ꞌAylóꞌchaxnim means 'Venus girl' in the indigenous Luiseño language[18] of southern California. See https://en.wikipedia.org/wiki/594913_ꞌAylóꞌchaxnim]

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

From March 18, 2026.

This episode went through a lot of rewrites as breaking news kept breaking our hearts. Artemis is still on, but there are delays and cancellations. Before we face that, let's look at some pretty pictures and remember the universe is pretty even when our Earthly-timeline is not.

JWST Wolf-Rayet stars pix:

https://science.nasa.gov/asset/webb/wolf-rayet-apep-miri-image/

Exposed Cranium Nebula:

https://science.nasa.gov/asset/webb/exposed-cranium-nebula-nircam-and-miri-images/

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted and sponsored by Andy Poniros.

Veteran of more than 590 days in space on Shuttle, Soyuz, & ISS missions NASA Astronaut, Don Pettit. Don discusses his space missions, the upcoming Artemis II mission, as well as his amazing inventions & photography from space.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by Steve Nerlich.

Bringing it home. Cheap Astronomy digs in to asteroid mining.

Dear Cheap Astronomy – Are rubble pile asteroids easier to mine?

Rubble pile asteroids are a collection of rocks that have accreted together under their mutual gravity, but the object they form isn't massive enough for gravity to compress it into one unified object. Instead, the rocks that gather together remain as individual rocks. So, from a mining perspective there's an advantage in that you can just pick up those individual rocks without needing drilling or explosives.

Dear Cheap Astronomy – How do we get mining products back to Earth?

The current narrative on space mining seems to go in two directions. One direction is about in situ resource utilization (ISRU in NASA speak) where there's no doubt it's a lot cheaper to source water from space than to launch it from Earth – and a similar principle applies to most building materials: steel, concrete and glass. Of course, the mathematics of in situ resource utilization makes perfect sense but begs the question of what the economic incentives are to build dwellings in space and source space water to support the people in those dwellings, as well supporting agriculture and making rocket fuel. If we can't identify those incentives, we're just saying that we're going to go into space so we can go into space.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

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Paul Hill & Dr. Jenifer "Dr. Dust" Millard host.

Damien Phillips, John Wildridge and Dustin Ruoff produce.

Our chatty astrowaffle episode this month (March Part 2) is all about the Artemis re-jig and what the future now holds for the program. Oh, and an update on Jeni's drains.

Cafuego's Jellyfish:

https://app.astrobin.com/u/cafuego?i=zdl9yu

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org

https://www.youtube.com/watch?v=jY1_q9a0UFc

Hosted by: Fraser Cain ( @frasercain ) and Dr. Pamela L. Gay ( @CosmoQuest )

Streamed live on Mar 16, 2026.

Main sequence stars spend most of their time being… normal. Fusing hydrogen into helium in their cores. Producing radiation. But as their stockpiles of hydrogen run out they switch to other fuels, starting to climb the ladder of the periodic table of elements. And this is when things get weird. As we get more and more observations of the cosmos, our understanding gets more detailed. In this episode we look at all the ways a star can die and the updates that we've learned in the past 20 years of Astronomy Cast.

Image Credit: NASA Galex

This show is supported through people like you on Patreon.com/AstronomyCast

In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From September 2025.

Today's 2 topics:

- On a short June night my Catalina Sky Survey teammate Greg Leonard was observing with our 60 inch telescope on Mt. Lemmon, Arizona in the constellation of Ursa Major when a relatively bright fast moving point of light appeared in a set of his images. Even though on its current path Greg's discovery, 2025 MM89, has virtually no chance of impacting our home planet asteroid hunters will continue to track it to make sure it doesn't become a threat as it passes other objects in space.

- Amazingly, nature occasionally sends an interstellar traveler through our solar system for us to observe. The third such object that astronomers have discovered coming into our solar system from truly deep space is 3I/ATLAS. It was discovered as it streaked towards the inner solar system at 130,000 miles per hour by the ATLAS team's 20 inch telescope in Chile and was quickly tracked by telescope around the world.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

In this episode of Dark Sky Guardian, we learn how thoughtful lighting can reduce glare, save energy, protect wildlife, and restore our connection to the night sky.

"ASTROMAN: the Dark Sky Guardian" is a podcast channel that aims to explore popular science in multiple disciplines and research on interdisciplinary approaches, such as sustainability, dark-sky protection, astrophotography, space exploration, astronomy innovation, inclusive science communication, and STEAM Education by integrating science and arts.

Exodus CL Sit, also known as the ASTROMAN, is a transmedia astronomy educator, popular science author, STEAM educator, and science communicator in Hong Kong. He is recently the National Astronomy Education Coordinator (Chair of Hong Kong, China) of the International Astronomical Union and President of Starrix. He was also an International Committee Member of the Dark Sky International, regularly organizing public lectures at the Hong Kong Space Museum and the Hong Kong Science Museum. He was also the author of a popular science book "Decoding the Starry Night: A Guide to Stargazing and Astrophotography".

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------------------------------------

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://cosmoquest.org/x/dailyspace/2020/01/07/planets-stars-and-death-to-dark-energy/

From January 7, 2020.

The Hubble Space Telescope continues to give us amazing views and science, 30 years later. Here are a couple of new stories that help us appreciate this amazing tool of science.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com

A listener builds their dream observatory on Episode 529 of the Actual Astronomy podcast. I'm Chris and joining me is Shane. We are amateur astronomers who love looking up at the night sky and this podcast is for everyone who enjoys going out under the stars.

We have a special guest joining us today, listener Kevin Duchscherer is joining us to share his Observatory Progress.

- Where are you located Kevin?

- How long have you been a listener?

- Tell us about how you became interested in astronomy

- What sort of astronomy do you enjoy? Visual? astro-Imaging? Both?

- What equipment have you owned?

- What equipment is in or will go into the observatory?

- What was your path to building an observatory

- Tell us about the design & construction but please start with the footprint size for both the observing area and warm room! Wall & pier height? How did you determine that?

- How did you isolate piers?

- I note the warm room is south?

- What sort of rolling mechanism/rollers?

- Is the roof powered?

- I note you insulated? So will you climate control / AC in summer?

- Plans for use and;

- There was something vaguely familiar, I note some of the features from "A Crayford Type Observatory" https://crayfordmanorastro.com/2019/02/11/a-crayford-type-roll-off-roof-observatory/

- Next steps

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by Steve Nerlich.

Cheap Astronomy asks what's the point and then gets some sunshine.

Dear Cheap Astronomy – Did the Universe start from a single point?

This hypothetical concept is commonly stated in pop science blogs and we are guilty of doing the same here at Cheap Astronomy. However, it's not necessarily correct. As with most things relating to the Universe, all we can really talk about is the observable Universe. All evidence available does suggest that it emerged from a point source 13.8 billion years ago, but if the actual Universe is bigger than the observable Universe – and it very likely is – then it's not clear that the whole Universe emerged from that point source.

Dear Cheap Astronomy – Is space-based solar power the solution to all our problems?

Well, not all our problems and while SBSP is technically feasible, it may not be economically viable. The general idea of SBSP is that you have a solar collecting facility in Earth orbit, which then transmits the energy collected as microwaves down to the Earth's surface. Microwaves are preferred since they pass through the Earth's atmosphere relatively well and should not harm aircraft, ground infrastructure or people if they happen to get in the way. It might seem a bit daft to intercept light that already passes through the Earth's atmosphere, convert it into a lower energy form of light and then pass that through the atmosphere.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by Dr. Paul M. Sutter.

What do we find when we push the James Webb Space Telescope to its limits? Are Little Red Dots newborn galaxies or old black holes? What are they teaching us about the early Universe? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE!

Big thanks to my top Patreon supporters this month: Justin G, Chris L, Alberto M, Duncan M, Corey D, Michael P, Naila, Sam R, Joshua, Scott M, Rob H, Scott M, Louis M, John W, Alexis, Gilbert M, Rob W, Jessica M, Jules R, Jim L, David S, Scott R, Heather, Mike S, Pete H, Steve S, Lisa R, Kevin B, Aileen G, Steven W, Deb A, Michael J, Phillip L, Steven B, Mark R, Alan B, Craig B, Richard K, Joe R, David P, Justin, Tracy F, Ella F, Thomas K, James C, Syamkumar M, Homer V, Mark D, Bruce A, Tim Z, Linda C, The Tired Jedi, Bob C, Stephen A, James R, Allen E, Michael S, Reinaldo A, Sheryl, David W, Chris, Michael S, Erlend A, James D, Karl W, Den K, Edward K, Scott K, Vivek D, Jennifer D, Barbara C, Brad, Azra K, Steve R, Koen G, Scott N, and M D Malahy!

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------------------------------------

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://www.youtube.com/watch?v=g_Y-ST_az9c

Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest)

Streamed live on Mar 9, 2026.

You think the Sun is a terrifying ball of fire and fury? Wait until you learn about today's topic: Wolf-Rayet stars! These are massive, dying stars hurling their outer layers out into space before detonating as supernovae. Big stars live brief lives, and Wolf-Rayet stars are the punctuation mark we see before things go supernova.

Image Credit: NASA, ESA, CSA, STScI; Science: Yinuo Han (Caltech), Ryan White (Macquarie University); Image Processing: Alyssa Pagan (STScI) Learn more here: https://science.nasa.gov/asset/webb/w...

This show is supported through people like you on Patreon.com/AstronomyCast

In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From August 2025.

Today's 2 topics:

- In a recent study Dr. Lynnane George and her co-authors investigate Space Elevator technology to remove materials from Ceres and deliver them to orbital depots around the solar system. The tiny gravity of Ceres, nano-fiber technology, and different water propulsion systems are utilized by Dr. George and her team to construct theoretically possible systems which would extract raw materials from Ceres and deliver them to low Earth orbit and other locations within the solar system. These researchers estimate such a transport system could reduce fuel costs by up to 60% compared to transport from the Earth's surface.

- Asteroid 2024 YR4 will not hit the Earth in 2032, has a 4% chance of hitting the Moon, and most likely will pass within 900 miles of the lunar surface. If 2024 YR4 were to impact the Moon it could send about the mass of several small cargo ships into space with lunar escape velocity and could pose a threat to our satellites. [Editor's note: Using JWST data, it's just been calculated to miss the Moon, unfortunately. Maybe next time…]

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

The Dark Energy Survey Collaboration collected information on hundreds of millions of galaxies across the Universe using the U.S. Department of Energy-fabricated Dark Energy Camera, mounted on the U.S. National Science Foundation Víctor M. Blanco 4-meter Telescope at CTIO, a Program of NSF NOIRLab. Their completed analysis combines all six years of data for the first time and yields constraints on the Universe's expansion history that are twice as tight as past analyses. In this podcast, Dr. Yuanyuan Zhang discusses the Dark Energy Survey results and how they inform the next steps in dark energy research.

Bios:

Rob Sparks is in the Communications, Education and Engagement group at NSF's NOIRLab in Tucson, Arizona.

Dr. Yuanyuan Zhang is an Assistant Astronomer at NSF's NOIRLab. Her research interest is on galaxy clusters and large scale structures. She is heavily involved in the Dark Energy Survey (DES) and the LSST Dark Energy Science Collaborations.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

From Sep 9, 2022.

As global temperatures rise, Earth observations show that glaciers are retreating and ice sheets are melting everywhere from Greenland to Antarctica while regions of the Arctic are getting greener. Plus, collaborations lead to new Mars and exoplanet discoveries, several rockets launched, and this week's What's Up involves Dr. Brian May of Queen.

JWST Tarantula Nebula image:

https://science.nasa.gov/asset/webb/tarantula-nebula-nircam-image/

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by our Director, Avivah Yamani.

Explore the story behind astronomical magnitude, from Hipparchus and Ptolemy to modern photometry, and learn why brighter stars have smaller numbers.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

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https://www.youtube.com/watch?v=598UtgxFd1E

From Jan 6, 2019.

The distances between stars are so vast, it's hard to wrap your mind around it. Even our far flung Voyagers have barely reached interstellar space, and would take tens of thousands of years to get to even the nearest star.

But scientists and engineers are considering what it would actually take to send a spacecraft to another star. It's called Project Dragonfly, and would use existing or near future technologies to send a 3,000 kg spacecraft to Alpha Centauri within 100 years.

Project Dragonfly paper:

https://www.sciencedirect.com/science/article/abs/pii/S0094576517319136?dgcid=rss_sd_all

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://www.youtube.com/watch?v=y-Uoy4BCs24

Hosted by Tony Darnell.

From May 16, 2025.

Join this channel to get access to special content including livestreams:

In July 2022, NASA's James Webb Space Telescope made its public debut with a series of breathtaking images. Among them was an ethereal landscape nicknamed the Cosmic Cliffs. This glittering realm of star birth is the subject of a new 3D visualization derived from the Webb data. The visualization, created by NASA's Universe of Learning and titled "Exploring the Cosmic Cliffs in 3D," breathes new life into an iconic Webb image.

Visuzliation created at STScI and available here:

https://science.nasa.gov/missions/webb/new-visualization-from-nasas-webb-telescope-explores-cosmic-cliffs/#section-id-3

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

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https://www.youtube.com/watch?v=iT3Pxmo1YLc

Hosted by: Fraser Cain (@frasercain ) and Dr. Pamela L. Gay (@CosmoQuest )

Streamed live March 6, 2026.

Magnetars are a special type of neutron star with physics that defy comprehension. Magnetic fields so powerful they could strip you apart at an atomic level. But, where do they come from? So many mysteries to uncover about magnetars. Back in December 2004, a gamma rays washed out cameras and zotted satellites as a star on the other side of the Milky Way shifted around its magnetic fields. Magnetars are violent that way. In this episode of Astronomy Cast, Fraser and Pamela take on this tiny terrible monsters.

This show is supported through people like you on Patreon.com/AstronomyCast

In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From August 2025.

Today's 2 topics:

- Big Bear Solar Observatory is a unique facility operated by the New Jersey Institute of Technology. Its 1.6 meter Goode Solar Telescope is located on the north side of Big Bear Lake at an elevation of 6,760 feet above sea level in the San Bernardino Mountains of Southern California. Being surrounded by cold water at high altitude provides the site with exceptional atmospheric stability and thus the possibility of extremely high quality solar images. It is hard to predict the value of basic research, however, work like this will eventually enable scientists to better understand how solar flares and other activity in the Sun's atmosphere effect astronauts, communications systems, auroras, radio blackouts, geomagnetic storms, satellites, power grids, and more on our home planet.

- Recently, using data from the Japanese infrared telescope AKARI, Dr. Amos Y.A. Chen and his collaborators published a paper in the Publications of the Astronomical Society of Australia which predicts the approximate positions of two massive Planet 9 candidates. To arrive at their conclusions this team carefully searched the AKARI observations for objects which over the course of months change their positions relative to distant stars and galaxies. Further observations are required to determine if either of these move like a Planet 9 or if instead they are some other type of distant astronomical object.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by our Director, Avivah Yamani.

A guide to March 2026 sky events from Indonesia, featuring the total lunar eclipse on March 3rd, planetary conjunctions, the March equinox, and dark sky campaigns.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

From February 25, 2026.

The glaciers are melting, the volcanoes are erupting, and earthquakes are shaking things up. Let's discuss.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

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Episode 524.

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan who enjoy teaching astronomy classes and showing the public views through their telescopes. actualastronomy@gmail.com

This month we talk about another Comet, colorful doubles, Mira at maximum. We also have one of the brightest clusters in the skies, the Beehive, well placed while the Moon meets with Antares then Regulus.

End of Feb. beginning of March Comet C/2024 E1 Wierzchos 6th – 7th magnitude

Mar 1 – Struve 1183 Monoceros – Colorful Double

Mar 2 – Regulus .4° S of Moon

Mar 3 – Full Moon & Lunar Eclipse for Western NA, 5:30am here in Regina.

- 5 Lynx colorful double star

Mar 5 – Zodiacal Light as we get into the new moon, seen in W after dark.

Mar 7 – Long Period Variable Star Mira at Max

- Carbon Star Y Hydra best, low in the south.

Mar 8 – daylight saving time begins at 3am

Mar 9 – M44 & M67 well placed this evening.

Mar 10 – Antares 0.7° N of Moon

Mar 11 – Last quarter Moon & Gegenschein high in S at midnight

- Two shadows visible on Jupiter Mar 11/12th but below horizon for us

- NGC 2683 well placed

Mar 12 Lunar Curtis X visible

- NGC 2775 well placed

Mar 13 – M93 well placed

Mar 14 – M46/M47 well placed

- Comet 29P/Schwassman-Wachmann M=15?

Mar 15 – Spot Capella unaided eye before sunset this week

- NGC 2477 well placed

Mar 18 – New Moon

Mar 19 – Young Crescent Moon in west after sunset

Mar 20 – Spring Equinox

- Carbon Star V Ophiuchi best in pre-dawn

Mar 21 – Asteroid 20 Massalia at opposition M=8.9:

20 Massalia is a stony asteroid and the parent body of the Massalia family located in the inner region of the asteroid belt, approximately 145 kilometers (90 miles) in diameter. Discovered by Italian astronomer Annibale de Gasparis on 19 September 1852, it was named for the Latin name of the French city of Marseille, from which the independent discover Jean Chacornac sighted it the following night. It was the first asteroid that was not assigned an iconic symbol by its discoverer.

Mar 23 – Carbon star S Scuti best in pre-dawn

Mar 25 – First Quarter Moon

- Lunar X near crater Werner visible

- Lunar straight wall visible

- Asteroid 15 Eunomia at opposition:

15 Eunomia is a very large asteroid located in the middle of the asteroid belt. It is the largest of the stony (S-type) asteroids and is estimated to contain approximately 1% of the total mass of the entire asteroid belt.

Key Facts and Discovery:

- Discovery: It was discovered on July 29, 1851, by the Italian astronomer Annibale de Gasparis.

- Naming: Named after Eunomia, a Greek goddess (one of the Horae) who personifies order and law.

- Classification: It is the largest member of the Eunomia family, a group of S-type asteroids that likely originated from the same parent body after a massive collision.

Mar 26 – Jupiter 4° S of Moon

Mar 27 – Longomontanus Ray visible on moon

- Iota Cancri colorful double star, named Yuyu on Feb 22, 2026!

Mar 28 – Jeweled Handle Visible on Moon

Mar 29 – Regulus 4° S of Moon

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Paul Hill and Dr. Jenifer "Dr. Dust" Millard host.

Damien Phillips, John Wildridge and Dustin Ruoff produce.

March episode part 1.

This month it is the curious case of a vanishing star and galaxies that shine no light…plus our monthly skyguide and Jeni has a blocked drain!

Also: https://www.almaobservatory.org/en/press-releases/alma-creates-largest-ever-image-of-the-milky-ways-core/

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------------------------------------

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by Dr. Paul M. Sutter.

How can anyone agree on the age of the Universe? And how can we be so confident if it's all just a bunch of models? What if the Universe is extra lumpy, does that change anything? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE!

Big thanks to my top Patreon supporters this month: Justin G, Chris L, Alberto M, Duncan M, Corey D, Michael P, Naila, Sam R, Joshua, Scott M, Rob H, Scott M, Louis M, John W, Alexis, Gilbert M, Rob W, Jessica M, Jules R, Jim L, David S, Scott R, Heather, Mike S, Pete H, Steve S, Lisa R, Kevin B, Aileen G, Steven W, Deb A, Michael J, Phillip L, Steven B, Mark R, Alan B, Craig B, Richard K, Joe R, David P, Justin, Tracy F, Ella F, Thomas K, James C, Syamkumar M, Homer V, Mark D, Bruce A, Tim Z, Linda C, The Tired Jedi, Bob C, Stephen A, James R, Allen E, Michael S, Reinaldo A, Sheryl, David W, Chris, Michael S, Erlend A, James D, Karl W, Den K, Edward K, Scott K, Vivek D, Jennifer D, Barbara C, Brad, Azra K, Steve R, Koen G, Scott N, and M D Malahy!

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------------------------------------

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Off label uses for Pulsars…

https://www.youtube.com/watch?v=4XMJBiJao6M

Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest)

Streamed live on Feb 16, 2026.

Pulsars are dead stars and fascinating in their own right, but astronomers can use their predictable rotation for exploring the cosmos in a series of amazing ways. We can detect gravitational waves, navigate the solar system, test general relativity and find exoplanets. Pulsars are the time keepers of the sky, with their precise ticking allowing researchers to track gravitational waves, find exotic planets, and study weird relativistic effects. Come learn about how pulsars can be used to explore our universe.

Image credit: NASA/CXC/ASU/J. Hester et al., HST/ASU/J. Hester et al.

This show is supported through people like you on Patreon.com/AstronomyCast

In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.

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------------------------------------

Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

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------------------------------------

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From July & August 2025.

Today's 2 topics:

- After the Earth the Sun is the most important object for human beings in the Universe. It is the energy source which produces our food and is the source for all of the energy and motion around us except for geothermal and nuclear energy sources. The Sun is normally well behaved the exception being solar storms which can dump incredible amounts of energy onto the Earth. Scientists are working hard to understand solar super storms to enable humans to mitigate the trillions of dollars damage one could cause to our modern electronic technology.

- The US National Science Foundation's Daniel K. Inouye Solar Telescope is the worlds largest solar telescope. It is perched 10,000 feet above sea level on the top of Haleakalā on the Hawaiian island Maui. Its location and 4 meter mirror enables the Inouye to see details in the solar atmosphere as small in diameter as the island of Manhattan. 3D maps of the solar atmosphere produced by the Inouye's new Visible Tunable Filter will enable humans to put their equipment into a safe mode when necessary.

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.

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Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

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------------------------------------

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by Dr. Jacinta Delhaize, Dr. Tshiamiso Makwela, Dr. Daniel Cunnama & François Campher

With Tumelo Mangena, Leyya Stockenstroom and Ndivhuwo Netshiavha.

In this episode, we hear from three postgraduate astronomy students from the University of Cape Town about their worldly adventures during a research trip to the University of Oxford in the UK!

PhD student Tumelo Mangena and Masters students Leyya Stockenstroom and Ndivhuwo Netshiavha are part of the RADHIANCE research group led by our very own Jacinta Delhaize! They use world-leading telescopes, like South Africa's MeerKAT, to examine the light from distant galaxies to try and understand why they have mysteriously changed and evolved over the history of the Universe. Their team name, RADHIANCE, stands for "Radio-Based Analysis and Detection of HI, AGN, star-formatioN, and their Cosmic Evolution" – and they even have a cute logo!

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

From April 15, 2022.

An analysis of microscopic features in rocks from the Nuvvuagittuq Supracrustal Belt in Quebec, Canada, which date back between 3.75 and 4.28 billion years, finds evidence of possible microbial life. Plus, a supermassive black hole precursor, temperatures on Neptune, check-ins with various spacecraft, and our weekly What's Up segment.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

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Today we're talking with Dr. Richard Tresch Fienberg (https://aas.org/press/richard-tresch-fienberg), astronomer and science communicator, who shares his experiences as Expert Astronomer on Sky & Telescope magazine's September 2025 Astronomy Tour to "Galileo's Italy." Though enjoying retirement, he volunteers his time for the American Astronomical Society as Senior Advisor to the CEO, and is a Senior Contributing Editor with Sky & Telescope. This is the first of two episodes covering our interview.

Loretta Cannon (an AAS affiliate via Rose City Astronomers) is a science-and-word-nerd who really likes outer space and the people who study it. She quite enjoys working as HAD's podcaster, sharing astronomy stories to you.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by Steve Nerlich.

Cheap Astronomy investigates things that haven't happened yet.

- Dear Cheap Astronomy: When will the Sun destroy the Earth and can we stop it?

- Dear Cheap Astronomy: Will we ever meet aliens?

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

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Paul Hill and Dr. Jenifer "Dr. Dust" Millard host.

Damien Phillips, John Wildridge and Dustin Ruoff produce.

February Episode Part 2.

This episode we chat about the potential ozone hole issue caused by mega constellations, how Jupiter has shrunk and what Aurora would look like when Earth's poles flip.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

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https://www.youtube.com/watch?v=hzFgfN2B_k4

Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest)

Streamed live on Feb 16, 2026.

There are many types of variable stars. Today we're gonna talk about cataclysmic variable stars, which are the result of a white dwarf stealing material from a companion star. And this whole process makes supervillain Pamela happy. Gravity is the weakest force, but on the scales of stars, it is capable of great violence. In this episode, we look at the wild physics of cataclysmic variables: binary star systems where one star is a predatory compact stellar remnant, while the other is a victimized normal star.

Image credit: NASA/CXC/M.Weiss

This show is supported through people like you on Patreon.com/AstronomyCast

In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero

We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.

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------------------------------------

Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

http://cosmoquest.org/Donate This show is made possible through your donations.

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------------------------------------

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From July 2025.

Today's 2 topics:

- Recently my Catalina Sky Survey teammate Dr. Hannes Gröller and I traveled to the Gila Cliff Dwellings National Monument to install two night sky meters which will enable this wonderful national treasure to become an international dark sky park. Surrounded by vast tracts of unoccupied public land and having an abundance of clear weather the Gila Cliff Dwellings National Monument and the Cosmic Campground International Dark Sky Sanctuary both in New Mexico are among the best places in the world to view the natural night sky.

- Sadly humans seem to be in the process of creating a cosmic land fill which will blot out much of the cosmos.

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------------------------------------

The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Episode 14.

Our Sun is more than a glowing ball in the sky. It's a dynamic, ever-changing star at the peak of its solar cycle. In this episode of ASTROMAN: The Dark Sky Guardian, we learn how to safely observe sunspots and solar flares, and why studying solar activity helps protect satellites, power grids, and even predicts auroras.

"ASTROMAN: the Dark Sky Guardian" is a podcast channel that aims to explore popular science in multiple disciplines and research on interdisciplinary approaches, such as sustainability, dark-sky protection, astrophotography, space exploration, astronomy innovation, inclusive science communication, and STEAM Education by integrating science and arts.

Exodus CL Sit, also known as the ASTROMAN, is a transmedia astronomy educator, popular science author, STEAM educator, and science communicator in Hong Kong. He is recently the National Astronomy Education Coordinator (Chair of Hong Kong, China) of the International Astronomical Union and President of Starrix. He was also an International Committee Member of the Dark Sky International, regularly organizing public lectures at the Hong Kong Space Museum and the Hong Kong Science Museum. He was also the author of a popular science book "Decoding the Starry Night: A Guide to Stargazing and Astrophotography".

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

In this episode, we take a closer look at how the increasing number of rockets and satellites going up mean there is also an unfortunate increase in the space junk coming down. We also cover dramatic weather, stars dying and disappearing, and update you on Maven and Paranal Observatory.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by Chris Beckett & Shane Ludtke, two amateur astronomers in Saskatchewan. actualastronomy@gmail.com

Episode 522.

Continuing on with our 2026 resolution we have a special guest listener joining us today.

Richard Navarette is a long time amateur astronomer from the San Francisco Bay Area where he has been instrumental in getting people out observing through The Astronomy Connection, well known as "TAC". Richard has owned 20+ telescopes over the years and while he has enjoyed viewing through many large instruments his personal collection has mostly been focused on portable, affordable gear.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Astronomers just found something cool!

Typically, most Sun-like stars host planets between the size of Earth and Neptune called 'super-Earths' or 'sub-Neptunes'. These planets often orbit their stars even closer than Mercury orbits our Sun. They're mostly rocky super-Earths or they have a thick atmosphere and a rocky core and are sub-Neptunes. They're the most common types of planet found in our Galaxy. And yet, astronomers weren't sure exactly how these planets formed.

So yeah, they found something cool!

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Hosted by Dr. Paul M. Sutter.

Why is math so effective at describing the Universe? What is reality is made of math? What does it mean for us to be conscious beings in a mathematical structure? I discuss these questions and more in today's Ask a Spaceman!

Support the show: http://www.patreon.com/pmsutter

All episodes: http://www.AskASpaceman.com

Watch on YouTube: http://www.youtube.com/PaulMSutter

Read a book: https://www.pmsutter.com/books

Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE!

Big thanks to my top Patreon supporters this month: Justin G, Chris L, Alberto M, Duncan M, Corey D, Michael P, Naila, Sam R, Joshua, Scott M, Rob H, Scott M, Louis M, John W, Alexis, Gilbert M, Rob W, Jessica M, Jules R, Jim L, David S, Scott R, Heather, Mike S, Pete H, Steve S, Lisa R, Kevin B, Aileen G, Steven W, Deb A, Michael J, Phillip L, Steven B, Mark R, Alan B, Craig B, Richard K, Joe R, David P, Justin, Tracy F, Ella F, Thomas K, James C, Syamkumar M, Homer V, Mark D, Bruce A, Tim Z, Linda C, The Tired Jedi, Bob C, Stephen A, James R, Robert O, Allen E, Michael S, Reinaldo A, Sheryl, David W, Chris, Michael S, Erlend A, James D, Karl W, Den K, Edward K, Scott K, Vivek D, Barbara C, Brad, Azra K, Steve R, Koen G, and Scott N!

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://www.youtube.com/watch?v=sVvY9HGss8E

Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest)

Streamed live on Feb 13, 2026.

Modern astronomy has found that the Universe can surprise us. Here's one which astronomers have called Luminous Fast Blue Optical Transients. They're kinda like supernovas, they're kind of like gamma ray bursts, but they're not like them. So what are they? In the distant Universe, are blue light flashes, bright and hard to understand. These objects, uncreatively named "Luminous Fast Blue Optical Transients," are just the kind of puzzle astronomers love. In this episode, we look at their discovery and our current understanding of what they might be.

Image credit: NASA, ESA, NSF's NOIRLab, Mark Garlick, Mahdi Zamani

This show is supported through people like you on Patreon.com/AstronomyCast

In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From June & July 2025.

Today's 2 topics:

- In 2016 NASA created the Planetary Defense Coordination Office to manage the mission of finding, tracking, and studying asteroids and comets which could pose an impact threat to our home planet.The NASA documentary "Planetary Defenders" provides an excellent over view and can be streamed on the internet:

https://www.youtube.com/watch?v=jOb2DQWvDvc

- My Catalina Sky Survey teammate Vivian Carvajal was asteroid hunting in the constellation of Cepheus with our small but mighty Schmidt telescope on Mt. Bigelow, Arizona when she discovered 2025 JB1.Fortunately on its current path there is zero probability that 2025 JB1 will impact our home planet in the foreseeable future. Further asteroid hunters continue to search for any other large asteroids which might impact Earth so that mitigation efforts would be effective.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Sweeping winds of vaporized metals have been found in a massive cloud that dimmed the light of a star for nearly nine months. This discovery, made with the Gemini South telescope in Chile offers a rare glimpse into the chaotic and dynamic processes still shaping planetary systems long after their formation. In this podcast, Dr. Nadia Zakamska describes the discovery of this object, stemming from a mysterious dimming of a star, to the analysis of the gas cloud.

Bios:

- Rob Sparks is in the Communications, Education and Engagement group at NSF's NOIRLab in Tucson, Arizona.

- Dr. Nadia Zakamska was born and raised in Russia and received a Masters degree from Moscow Institute of Physics and Technology. She came to the United States in 2001 to pursue graduate education in Astrophysics in Princeton University. After her Ph.D., she was a postdoctoral researcher at the Institute for Advanced Study in Princeton and at Stanford University before moving to the Johns Hopkins University for a faculty position in 2011. She is now a professor in the Department of Physics and Astronomy, with a wide range of research interests across many areas of astrophysics. She lives in Baltimore with her husband and four children.

NOIRLab social media channels can be found at:

https://www.facebook.com/NOIRLabAstro

https://twitter.com/NOIRLabAstro

https://www.instagram.com/noirlabastro/

https://www.youtube.com/noirlabastro

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

From May 21, 2020.

Join us today as we discuss the impressive work by an undergraduate student who figured out how galaxy mergers influence the growth of supermassive black holes. We talk about a gigantic galaxy found in the early universe. And finally, we look at amazing images of a planet being formed around a distant star.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

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https://www.youtube.com/watch?v=-Alz4UXGqLk

From March 8, 2017.

In just a few months, NASA's Cassini spacecraft is going to die, crashing into the planet Saturn. Let's look back across the mission's history. What were the highlights? What did we learn?

Team: Fraser Cain - @fcain / frasercain@gmail.com

Karla Thompson - @karlaii

Chad Weber - weber.chad@gmail.com

Ask me my favorite object in the Solar System, especially to see through a telescope, and my answer is always the same: Saturn. Saturn is this crazy, ringed world, different than any other place we've ever seen. And in a small telescope, you can really see the ball of the planet - you can see its rings.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

A podcast about rocks, big and small.

Dear Cheap Astronomy – What's Psyche really like?

Psyche is an asteroid in the asteroid belt and apparently a very metal rich one, which makes it a prospecting target for budding asteroid miners. Pysche is also a spacecraft, launched on October 13, 2023. We're recording this episode about one month after launch when it's already over 15 million km from Earth – and its destination? Yep, Psyche – the asteroid.

Dear Cheap Astronomy – How is Mars Sample Return mission going?

Here at Cheap Astronomy we've often said that landing on Mars is one thing – getting off it again is quite another. But this is the intention of the Mars Sample Return mission – which has already commenced insofar as the Perseverance rover is currently collecting samples for it – some of which have dropped for later retrieval, while others remain stored within the rover.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://www.youtube.com/watch?v=d7FAg_AYXaw

From April 14, 2025.

Astronomers using the JWST have made direct observations of the black hole at the center of our galaxy: Sagittarius A*. These observations are possible because the Webb Space Telescope can peer through the dust at the center of our galaxy using infrared light. These observations surprised astronomers.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

https://www.youtube.com/watch?v=PpZRjII8qkc

Hosted by: Fraser Cain (@frasercain) and Dr. Pamela L. Gay (@CosmoQuest)

Streamed live on Feb 2, 2026.

One long standing mystery in astronomy were the quasars. Incomprehensible energy blasting out of a point-like source, billions of light years away. We now know these are actively feeding supermassive black holes, which can turn off and on in a startlingly short period of time. Today: When black holes awaken! Our Universe is filled with sleeping monsters. And sometimes, whether we want it or not, they wake up hungry. In this episode, we take a look at the science behind how and why black holes of all sizes can go from nothing to the triggers of massive high-energy power release.

This show is supported through people like you on Patreon.com/AstronomyCast

In this episode, we'd like to thank: Burry Gowen, Eric Lee, Jeanette Wink, Michael Purcell, Andrew Poelstra, David, David Rossetter, Ed, Gerhard Schwarzer, Jason Kwong, Joe McTee, Sergey Manouilov, Siggi Kemmler, Sergio Sancevero

Image credit: LOFAR/Pan-STARRS/S. Kumari et al.

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Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

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Dr. Al Grauer hosts. Dr. Albert D. Grauer ( @Nmcanopus ) is an observational asteroid hunting astronomer. Dr. Grauer retired from the University of Arkansas at Little Rock in 2006. travelersinthenight.org

From June, 2025.

Today's 2 topics:

- In the search for life on Mars, Europa, Titan, and elsewhere in the universe astro-biologists are scouring the Earth for creatures tough enough to flourish under really difficult conditions. So far the leading species are the Tardigrades commonly known as water bears or moss piglets.

- Data are consistent with the hypothesis that the planet K2-18b is a Hycean planet with a warm liquid water ocean teaming with life and a thin hydrogen rich atmosphere containing methane and other molecules containing carbon. Scientists in an opposing camp point out what we might be observing is a rocky world with a hot life killing atmosphere.

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Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness!

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.