41% of the moon is not visible from earth at any time.
103
If two pieces of metal touch in space, they become permanently stuck together.
808
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
The heart of an astronaut actually gets smaller when in outer space.
216
Jupiter's magnetosphere is the largest single structure inside the Solar System. If you could see it with your eyes, it would appear larger than our full Moon.
8
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14