Some asteroids have other asteroids orbiting them.
131
The heart of an astronaut actually gets smaller when in outer space.
216
The Earth gets 100 tons heavier every day due to falling space dust.
673
More than 20 million meteoroids enter Earth's atmosphere every day.
139
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
Pluto is smaller than Russia.
9
There are two golf balls sitting on the moon.
721