An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Astronauts cannot burp in space.
232
Lightning strikes about 6,000 times per minute on this planet!
158
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
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
Some asteroids have other asteroids orbiting them.
131