There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Earth is the only planet in our solar system that's not named after a god or goddess.
17
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221