- Season 49
- 17 episodes
Episode 4: Horizon: How Big Is the Universe?
As writer Bill Bryson once pointed out, the thing about space is that it’s very well named. There really is a lot of space in it.
It’s also unfathomably large, as this Horizon tries to explain. Infinitely large in fact, yet (if you can get your head around the idea) still expanding, because space itself is getting bigger. Here, we meet some of the mega-brained cosmologists and astrophysicists who trade in such ideas and are effectively trying to map the entire universe.
I particularly liked the man who has set about photographing our local patch, the Milky Way. The full-colour image he has created, portraying an area 100,000 light years across, is quite something.
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|Series editor||Aidan Laverty|