The grey whale migrates 12,500 miles from the Artic to Mexico and back every year.

Alfred Nobel invented dynamite in 1866.

If every star in the Milky Way was a grain of salt they would fill an Olympic sized swimming pool.

The largest dinosaur ever discovered was Seismosaurus who was over 100 feet long and weighed up to 80 tonnes.

Even travelling at the speed of light it would take 2 million years to reach the nearest large galaxy, Andromeda.

It takes 8 minutes 17 seconds for light to travel from the Sun's surface to the Earth.

Every second around 100 lightning bolts strike the Earth.

The largest desert in the world, the Sahara, is 3,500,000 square miles.