There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Sound doesn't travel in space.
255
The earth travels through space at 660,000 miles per hour.
189
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
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
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15