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
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
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
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
The heart of an astronaut actually gets smaller when in outer space.
216
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9