The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
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
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
Astronauts cannot burp in space.
232
The earth travels through space at 660,000 miles per hour.
189