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
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Venus is the only planet that rotates clockwise.
310
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
The Earth gets 100 tons heavier every day due to falling space dust.
673
There are two golf balls sitting on the moon.
721
It takes eight and a half minutes for light to get from the sun to earth.
159