It takes eight and a half minutes for light to get from the sun to earth.
159
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Astronauts get taller when they are in space.
224
Pluto is smaller than Russia.
9
Sound doesn't travel in space.
255
The earth travels through space at 660,000 miles per hour.
189
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