Astronauts get taller when they are in space.
224
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
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
Pluto is smaller than Russia.
9