Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
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
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
The Earth gets 100 tons heavier every day due to falling space dust.
673
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
It takes eight and a half minutes for light to get from the sun to earth.
159