Wednesday 18 February, 8:00pm - 9:00pmon BBC Four HD

Brian Cox's Adventures in Space and Time

Name: 2:45am - Series 1 Episode 4
Start: 2026-02-19T02:45:00Z
End: 2026-02-19T03:45:00Z
Location: BBC Four HD

Series 1 Episode 4: What Is Time?

Brian explores a simple question that is causing a big stir today: what is time? Modern science shows it to be far stranger than we think. He recalls some highlights from his TV series that touch upon different sides of this physics conundrum.

Category: Documentary / Science
Original air date: 20/06/2021

Cast and crew

Brian CoxHost

Upcoming broadcasts

Wednesday 18 February, 8:00pmon BBC Four
Series 1 Episode 4
Thursday 19 February, 2:45amon BBC Four
Series 1 Episode 4
Thursday 19 February, 2:45amon BBC Four HD
Series 1 Episode 4