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 is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
More than 20 million meteoroids enter Earth's atmosphere every day.
139
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Venus is the only planet that rotates clockwise.
310