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 population of the Earth has more than doubled since 1950.
151
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Astronauts cannot burp in space.
232
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The sun is 330,330 times larger than the earth!
190
The heart of an astronaut actually gets smaller when in outer space.
216
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46