The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Summer on Uranus lasts for 21 years.
358
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
If two pieces of metal touch in space, they become permanently stuck together.
808