A comet's tail always points away from the sun.
2
The earth travels through space at 660,000 miles per hour.
189
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
Venus is the only planet that rotates clockwise.
310
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
There are two golf balls sitting on the moon.
721
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