A thimbleful of a neutron star would weigh over 100 million tons.

Every year over one million earthquakes shake the Earth.

The speed of light is generally rounded down to 186,000 miles per second. In exact terms it is 299,792,458 m/s (metres per second – that is equal to 186,287.49 miles per second).

DNA was first discovered in 1869 by Swiss Friedrich Mieschler.

More germs are transferred shaking hands than kissing.

Every second around 100 lightning bolts strike the Earth.

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

Wilhelm Rontgen won the first Nobel Prize for physics for discovering X-rays in 1895.