Moon
It's trickier than you think.
This hasn't happened since 1967.
Europa has a frozen crust and high radiation, but some scientists anticipate finding life there.
No butts about it.
WHAT'S HAPPENING
The name has nothing to do with the moon's actual color.
Watch the moon's shadow sweep across our planet's surface.
And what's coming up next in the night sky.
Go ahead and forget what you know about the origins of the Earth and moon.
Pink Floyd, eat your heart out.
Rupert Grint talks wizards and the moon landing conspiracy.