There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
There are two golf balls sitting on the moon.
721
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Astronauts cannot burp in space.
232
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
Jupiter is bigger than all the other planets combined.
254