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
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Sound doesn't travel in space.
255
Venus is the only planet that rotates clockwise.
310
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
The earth rotates more slowly on its axis in March than in September.
145
It would take more than 150 years to drive a car to the sun.
569
The light hitting the earth right now is 30 thousand years old.
163