Extracted From Einstein Year
Astatine is an element so rare that if you searched the entire planet youâ€™d only find a lump the size of a sugar cube.
When a flea jumps, the rate of acceleration is 20 times that of the space shuttle during launch.
The maximum speed that raindrops can fall at is around 18mph, depending on their size.
If every star in the Milky Way was a grain of salt they would fill an Olympic sized swimming pool.
12 Astronauts have walked on the moon, between them bringing back 382 kilograms of rocks, pebbles, sand and dust.