The Sky at Night

How Long is a Day?

Not Rated
S9 • E6    Jun 4, 1965
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.

Where to Watch The Sky at Night - S9 • E6

 

  •   
  •   
  •   
  •   
  •   
  •   
  •   

Take Plex everywhere

Watch free anytime, anywhere, on almost any device.
See the full list of supported devices