One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
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
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
There are two golf balls sitting on the moon.
721
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15