|
astronomy geekness.
Before I ask this question, I just wanna say I don't want any answers that say 'go look in your textbook', or 'wiki it'. Because every time I ask a random science/history/etc-related question, that's half the answers i get D:< But believe it or not, people who randomly question the world around them actually exist. THEY DO.
Well, anyway. I was just wondering - why and how do planets/stars/ move? I mean, I know they move around the sun and whatnot because of gravity, but that just keeps them in orbit...doesn't it?
[ ]
Want to answer more questions in the Miscellaneous category?
Maybe give some free advice about: Random Weirdos?
well as you see my dear the sun the moon and the stars rotate so whate ever you do has gravity and there is no reason for anywrong answers casue the point is that we all are predictors but believe me the world is round and it goes in a circle too and so does the stars and the moon
]
Massive objects bend space toward them, creating what's called a "gravity pool". Other objects spin inside of the gravity pool. Take a look at this picture:
[Link](Mouse over link to see full location)
Image that space is a the surface of a big trampoline. The sun is a bowling ball at the center. The planets are marbles. If you roll the marbles parallel to the bowling ball, they will spin around it within the depression created by the bowling ball. On earth, gravity forces the marbles toward the bowling ball, but in space they maintain the parallel motion.
All gravity works that way. Like the planets, the sun is orbiting the center of the galaxy, and the galaxy is orbiting other galaxies in our cluster. Our cluster is probably orbiting other clusters.
This was explained in Einstein's general theory of relativity.
[Link](Mouse over link to see full location)
[Link](Mouse over link to see full location)
]
More Questions: |