Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Jupiter is bigger than all the other planets combined.
254
The heart of an astronaut actually gets smaller when in outer space.
216
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
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The light hitting the earth right now is 30 thousand years old.
163