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
Summer on Uranus lasts for 21 years.
358
NASA invented baby food as we know it today.
7
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The light hitting the earth right now is 30 thousand years old.
163
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
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15