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
Some asteroids have other asteroids orbiting them.
131
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The Earth gets 100 tons heavier every day due to falling space dust.
673
Lightning strikes about 6,000 times per minute on this planet!
158
If two pieces of metal touch in space, they become permanently stuck together.
808
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11