The population of the Earth has more than doubled since 1950.
151
There are two golf balls sitting on the moon.
721
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The heart of an astronaut actually gets smaller when in outer space.
216
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175