Main content

Black Hole Time Travel
Dr Becky Smethurst talks about how you might experience time differently near a black hole, if you were willing to get close to one!
Duration:
This clip is from
More clips from Greenwich: A Journey Through Space and Time
![]()
You Cant Unbake a Cake
Duration: 01:02
![]()
Where Spacetime Fails
Duration: 01:05
![]()
Proving Einstein Right
Duration: 00:27
![]()
Starguide: June 2025
Duration: 05:07
More clips from The Sky at Night
![]()
Star Loungers
Duration: 00:58
![]()
The End of Time in Space
Duration: 00:47
![]()
Cosmic Teenage Rebellion
Duration: 00:44
![]()
A Brand-New Mineral
Duration: 01:05









