The Mystery of Dark Energy

BBC FOUR

Thursday 9 January 2020  22:30 - 23:30 (60 mins)
3/17. Horizon looks at dark energy - the mysterious force that is unexpectedly causing the universe's expansion to speed up. Also in HD. [S]

The Mystery of Dark Energy may be available on playback
The Mystery of Dark Energy (BBC FOUR) Thursday 9 January 2020 22:30 - 23:30