Pluto is smaller than Russia.
9
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Astronauts cannot burp in space.
232
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46