A comet's tail always points away from the sun.
2
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Astronauts get taller when they are in space.
224
If two pieces of metal touch in space, they become permanently stuck together.
808
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9