Only 55% of Americans know that the sun is a star.
986
The heart of an astronaut actually gets smaller when in outer space.
216
Buzz Aldrin’s mother’s maiden name was Moon.
9
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
Sound doesn't travel in space.
255
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115