Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Astronauts get taller when they are in space.
224
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6