A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Venus is the only planet that rotates clockwise.
310
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
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
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194