If two pieces of metal touch in space, they become permanently stuck together.
808
The population of the Earth has more than doubled since 1950.
151
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
Pluto is smaller than Russia.
9
There are two golf balls sitting on the moon.
721
The Earth gets 100 tons heavier every day due to falling space dust.
673
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
Some asteroids have other asteroids orbiting them.
131