The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Astronauts get taller when they are in space.
224
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The Earth gets 100 tons heavier every day due to falling space dust.
673
More than 20 million meteoroids enter Earth's atmosphere every day.
139