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
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
In 1859, the largest known geomagnetic storm struck the Caribbean, causing an aurora and telegraphs could even operate without a power source.
25
A comet's tail always points away from the sun.
2
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6