It takes eight and a half minutes for light to get from the sun to earth.
159
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The earth rotates more slowly on its axis in March than in September.
145
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The population of the Earth has more than doubled since 1950.
151