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
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The population of the Earth has more than doubled since 1950.
151
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
Venus is the only planet that rotates clockwise.
310