41% of the moon is not visible from earth at any time.
103
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
If two pieces of metal touch in space, they become permanently stuck together.
808
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Only 55% of Americans know that the sun is a star.
986
Sound doesn't travel in space.
255