Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
A comet's tail always points away from the sun.
2
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Only 55% of Americans know that the sun is a star.
986
41% of the moon is not visible from earth at any time.
103
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
