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
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
There are two golf balls sitting on the moon.
721
The earth travels through space at 660,000 miles per hour.
189
Astronauts cannot burp in space.
232
A 100-pound person on Earth would weigh 38 pounds on Mars.
102