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
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
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
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Buzz Aldrin’s mother’s maiden name was Moon.
9
A 100-pound person on Earth would weigh 38 pounds on Mars.
102