Season 9 · Episode 6 of 13
Aired Jun 4, 1965
How Long is a Day?
Fri, Jun 4, 1965
0 of 13 watched this season
Recent studies suggest that the day on Mercury may be two months long. Patrick Moore discusses how this affects our ideas of conditions on Mercury, and how its length of day compares with that of other planets.
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Airs
Fri, Jun 4, 1965
Show
The Sky at Night
848 episodes
Episode
S9 · E6
in The Sky at Night