There's an interesting effect we can sometimes see regarding the moon. It happens when only a tiny sliver is visible shining on one side.
A full moon will never be seen during the middle of the day. Learn more on this Moment of Science.
To many folks, the phrase “dark side of the moon” suggests there’s a place you could go to on the moon which is perpetually cloaked in darkness. This is incorrect! Learn more on this Moment of Science.
Does earth have a second moon? Find out on this Moment of Science.