Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The earth travels through space at 660,000 miles per hour.
189
The population of the Earth has more than doubled since 1950.
151
Jupiter is bigger than all the other planets combined.
254
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
14