Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
It 'snows' metal on Venus.
13
It takes eight and a half minutes for light to get from the sun to earth.
159
There are two golf balls sitting on the moon.
721