Multiple choice

To an observer on the lunar surface, during the daytime the sky will appear to be

  1. Light yellow

  2. Orange

  3. Blue

  4. Black
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Moon has an extremely thin atmosphere (exosphere) that is insufficient to scatter sunlight in the way Earth's atmosphere does. On Earth, Rayleigh scattering in our atmosphere makes the sky appear blue during the day. Without a significant atmosphere, the lunar sky appears black even during the daytime, with the Sun appearing as a bright disc against the dark background.

Keep practicing — related questions