The earth travels through space at 660,000 miles per hour.
189
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
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The light hitting the earth right now is 30 thousand years old.
163
Astronauts get taller when they are in space.
224
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Mars had an oxygen-rich atmosphere around 4 billion years ago
13