If NASA sent birds into space they would soon die; they need gravity to swallow.
146
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
A comet's tail always points away from the sun.
2
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The center of the galaxy tastes like raspberries and smells like rum, according to astronomers.
4