When did The Sky at Night Season 21 Episode 2 air?
The Sky at Night Season 21 Episode 2 aired on February 17, 1977.
The Sky at Night
Your monthly journey through the fascinating world of space and astronomy with the latest thinking on what's out there in space and what you can see in the night sky.
Season 21 · Episode 2
Travel in Space and Time
Feb 17, 1977
How big is the universe - and does it have a boundary? Distances on the astronomer's scale are very hard to appreciate. Patrick Moore and Dr Ron Maddison discuss them in this programme, and explain how to describe them in everyday terms.
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