The earth rotates more slowly on its axis in March than in September.
145
Astronauts cannot burp in space.
232
41% of the moon is not visible from earth at any time.
103
Some asteroids have other asteroids orbiting them.
131
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Sound doesn't travel in space.
255
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124