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
Some asteroids have other asteroids orbiting them.
131
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Pluto is smaller than Russia.
9
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18