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
Summer on Uranus lasts for 21 years.
358
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
There are two golf balls sitting on the moon.
721
The earth travels through space at 660,000 miles per hour.
189
If you went out into space, you would explode before you suffocated because there's no air pressure.
149