A comet's tail always points away from the sun.
2
The heart of an astronaut actually gets smaller when in outer space.
216
Some asteroids have other asteroids orbiting them.
131
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
Lightning strikes about 6,000 times per minute on this planet!
158
It would take more than 150 years to drive a car to the sun.
569
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
41% of the moon is not visible from earth at any time.
103