The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
Lurch, a Watusi bull, had the largest horns in the world.
32
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82