41% of the moon is not visible from earth at any time.
103
Sound doesn't travel in space.
255
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
The Earth gets 100 tons heavier every day due to falling space dust.
673
Earth is the only planet in our solar system that's not named after a god or goddess.
17
The earth rotates more slowly on its axis in March than in September.
145