1. If two pieces of metal touch in space, they become permanently stuck together.
2. One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
3. The light hitting the earth right now is 30 thousand years old.
4. The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
5. Sound doesn't travel in space.
6. It would take more than 150 years to drive a car to the sun.
7. Jupiter is bigger than all the other planets combined.
8. The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
9. Venus is the only planet that rotates clockwise.
10. Today's top fuel dragsters take off with more force than the space shuttle.
11. There are three golf balls sitting on the moon.
12. There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
13. The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
14. The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
15. The temperature of the earth's interior increases by 1 degree every 60 feet down.
16. The sun is 330,330 times larger than the earth!
17. The population of the Earth has more than doubled since 1950.
18. The moon is actually moving away from Earth at a rate of 1.5 inches per year.
19. The heart of an astronaut actually gets smaller when in outer space.
20. The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
21. The earth travels through space at 660,000 miles per hour.
22. The earth rotates more slowly on its axis in March than in September.
23. The earth is .02 degrees hotter during a full moon.
24. The Earth gets heavier each day by tons, as meteoric dust settles on it.
25. The Earth gets 100 tons heavier every day due to falling space dust.
26. Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
27. Only 55% of Americans know that the sun is a star.
28. More than 20 million meteoroids enter Earth's atmosphere every day.
29. Lightning strikes about 6,000 times per minute on this planet!
30. Jupiter's moon Ganymede, is larger than the planet Mercury!
31. It takes eight and a half minutes for light to get from the sun to earth.
32. In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
33. If you went out into space, you would explode before you suffocated because there's no air pressure.
34. Astronauts cannot burp in space.
35. Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
36. Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
37. All of the Earth's continents are wider at the north than in the south - and nobody knows why.
38. A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
39. A comet's tail always points away from the sun.
40. A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)