Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The earth rotates more slowly on its axis in March than in September.
145
Some asteroids have other asteroids orbiting them.
131
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The population of the Earth has more than doubled since 1950.
151