Space is so interesting

Here are some interesting facts about space. What one did you find fascinating? Can you come up with your own fact about space?

1. 41% of the moon is not visible from earth at any time.
2. A 100-pound person on Earth would weigh 38 pounds on Mars.
3. A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
4. A comet's tail always points away from the sun.
5. A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
6. All of the Earth's continents are wider at the north than in the south - and nobody knows why.
7. Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
8. Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
9. Astronauts cannot burp in space.
10. Astronauts get taller when they are in space.
11. If you went out into space, you would explode before you suffocated because there's no air pressure.
12. In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
13. It takes eight and a half minutes for light to get from the sun to earth.
14. Jupiter's moon Ganymede, is larger than the planet Mercury!
15. Lightning strikes about 6,000 times per minute on this planet!
16. More than 20 million meteoroids enter Earth's atmosphere every day.
17. Only 55% of Americans know that the sun is a star.
18. Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
19. Some asteroids have other asteroids orbiting them.
20. The Earth gets 100 tons heavier every day due to falling space dust.
21. The Earth gets heavier each day by tons, as meteoric dust settles on it.
22. The earth is .02 degrees hotter during a full moon.
23. The earth rotates more slowly on its axis in March than in September.
24. The earth travels through space at 660,000 miles per hour.
25. The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
26. The heart of an astronaut actually gets smaller when in outer space.
27. The moon is actually moving away from Earth at a rate of 1.5 inches per year.
28. The population of the Earth has more than doubled since 1950.
29. The sun is 330,330 times larger than the earth!
30. The temperature of the earth's interior increases by 1 degree every 60 feet down.
31. The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
32. The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
33. There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
34. There are three golf balls sitting on the moon.
35. Today's top fuel dragsters take off with more force than the space shuttle.
36. Venus is the only planet that rotates clockwise.