In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18
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
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