There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The sun is 330,330 times larger than the earth!
190
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
Summer on Uranus lasts for 21 years.
358
The earth rotates more slowly on its axis in March than in September.
145
Mars had an oxygen-rich atmosphere around 4 billion years ago
13