There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Summer on Uranus lasts for 21 years.
358
The sun is 330,330 times larger than the earth!
190
The heart of an astronaut actually gets smaller when in outer space.
216
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100