There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
If two pieces of metal touch in space, they become permanently stuck together.
808
Pluto is smaller than Russia.
9
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20