There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
When a massive power outage struck southern California in the 1990s, Los Angeles residents reportedly called 911 to express alarm about strange clouds hovering overhead; they were seeing the Milky Way for the first time.
31
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
It would take more than 150 years to drive a car to the sun.
569
The light hitting the earth right now is 30 thousand years old.
163
Mars had an oxygen-rich atmosphere around 4 billion years ago
13