The heart of an astronaut actually gets smaller when in outer space.
216
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Only 55% of Americans know that the sun is a star.
986
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13