The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
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
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