How To Use a Black Hole To See Your Past

The Rest Is Science

What if the universe is recording everything you’ve ever seen and done?


In this episode, Hannah Fry and Michael Stevens explore the idea that light itself might carry a record of the past. And if it did, how could we watch history unfold by capturing it.


Could a perfectly placed mirror or even a black hole bend that ancient light back to us? Could we watch the pyramids being built, or hear Einstein’s final words?


From a nano-second old reflection in a mirror to the photons drifting through billions of miles of space, they reveal how everything we see is already gone, and uncover surprising truths about time, perception, and our own DNA. 


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


For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit ⁠⁠https://cancerresearchuk.org/restisscience⁠⁠


Cancer Research UK is a registered charity in England and Wales (1089464), Scotland (SC041666), the Isle of Man (1103) and Jersey (247). A company limited by guarantee. Registered company in England and Wales (4325234) and the Isle of Man (5713F). Registered address: 2 Redman Place, London, E20 1JQ.


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


Find The Rest Is Science all over the internet by ⁠⁠clicking here.


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


Video Producer: Adam Thornton + Oli Oakley + Jack Meek

Animator: Sam Benson

Video & Social: Bex Tyrrell

Assistant Producer: Lucy Lipscombe

Producer: Simona Rata

Senior Producer: Lauren Armstrong-Carter

Head Of Digital: Samuel Oakley

Exec Producer: Neil Fearn

Learn more about your ad choices. Visit podcastchoices.com/adchoices

More description

What if the universe is recording everything you’ve ever seen and done?


In this episode, Hannah Fry and Michael Stevens explore the idea that light itself might carry a record of the past. And if it did, how could we watch history unfold by capturing it.


Could a perfectly placed mirror or even a black hole bend that ancient light back to us? Could we watch the pyramids being built, or hear Einstein’s final words?


From a nano-second old reflection in a mirror to the photons drifting through billions of miles of space, they reveal how everything we see is already gone, and uncover surprising truths about time, perception, and our own DNA. 


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


For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit ⁠⁠https://cancerresearchuk.org/restisscience⁠⁠


Cancer Research UK is a registered charity in England and Wales (1089464), Scotland (SC041666), the Isle of Man (1103) and Jersey (247). A company limited by guarantee. Registered company in England and Wales (4325234) and the Isle of Man (5713F). Registered address: 2 Redman Place, London, E20 1JQ.


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


Find The Rest Is Science all over the internet by ⁠⁠clicking here.


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


Video Producer: Adam Thornton + Oli Oakley + Jack Meek

Animator: Sam Benson

Video & Social: Bex Tyrrell

Assistant Producer: Lucy Lipscombe

Producer: Simona Rata

Senior Producer: Lauren Armstrong-Carter

Head Of Digital: Samuel Oakley

Exec Producer: Neil Fearn

Learn more about your ad choices. Visit podcastchoices.com/adchoices

2026-05-04 52 min
Listen elsewhere

Available Results

Generated results are saved to your library for reuse and search.

No generated results are available for this episode yet.

Transcript

No transcript is available for this episode yet.
Sign in to generate a transcript for review.
Sign in

Chapters

No chapters available.