A comet's tail always points away from the sun.
2
Astronauts get taller when they are in space.
224
It 'snows' metal on Venus.
13
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
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
The population of the Earth has more than doubled since 1950.
151
Venus is the only planet that rotates clockwise.
310