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
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7