If NASA sent birds into space they would soon die; they need gravity to swallow.
146
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
14
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
When a massive power outage struck southern California in the 1990s, Los Angeles residents reportedly called 911 to express alarm about strange clouds hovering overhead; they were seeing the Milky Way for the first time.
31
If two pieces of metal touch in space, they become permanently stuck together.
808
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10