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 travels through space at 660,000 miles per hour.
189
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Astronauts cannot burp in space.
232
It would take more than 150 years to drive a car to the sun.
569