Mars had an oxygen-rich atmosphere around 4 billion years ago
13
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
Pluto is smaller than Russia.
9
Buzz Aldrin’s mother’s maiden name was Moon.
9
Astronauts cannot burp in space.
232
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
Venus is the only planet that rotates clockwise.
310