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we really dont know for sure if aging has anything to do with the passage of time other than a date on the calender do we?
its all relative i suppose.
i'm talking physically aging versus chronilogically aging.
your thoughts please.......

2007-05-10 07:29:58 · 5 answers · asked by bo-bo 3 in Science & Mathematics Astronomy & Space

fruit flies on the shuttle didn't go around the sun 3 times in 3 earth orbits either

2007-05-10 07:44:06 · update #1

5 answers

Contrary to what the first guy said, no one knows if "gravity" causes aging. Or if ultra-violent radiation, or anything else for that matter, since we don't really understand the aging process that well. Actually, the stronger gravity of the Earth should make you live longer than your twin on Pluto, because you would be getting more exercise simply by going about your daily routine (your body is heavier on Earth, so it takes more effort to move around), and we know that exercise somehow combats the aging process.

It appears that one of the things that causes aging is the death of cells. Apparently part of the time, cells die because their mitochondria (the part of the cell that "burn" food for energy) wear out. The only thing that we seem to know for sure is that one way to slow down aging is to eat few calories (I.E.: almost starve yourself). Mice that eat very little seem to live longer. However, it would probably hardly be worth it.

2007-05-10 07:42:57 · answer #1 · answered by Randy G 7 · 1 0

Yes we do know. Time is a constant and you age accordingly. The only possible variations of this is in Einstiens theory of relativity which states that as you approach the speed of light(also a constant) strange things start to occur and that time slows or stops. So in theory, if you left Earth on a spaceship traveling atthe speed of light and returned 30 years later, evryone on Earth would have aged 30 years and you would be basically the same age as when you left. This however, would not apply to person orbiting sun on a different planet as the speed with which planets orbit do not come anywhere close to the speed necessary to effect time or bend space. Make more sense now? I hope that clears it up a little. You can call a year a month, a day a second, it doesn't matter what you call it, the time passes the same no matter what you name it or where you are.

2007-05-10 07:42:54 · answer #2 · answered by booman17 7 · 0 0

Well to be honest no human would survive on pluto the sun would only be a speck in the sky, time is relative to motion. Astronaunts who spend extended periods of time in space traveling at high rates of speed actually come back a few nanoseconds younger than if they had stayed on earth. The only way to stop time is through massive gravitation where the gravity can actually bend space-time. and at the center of a black hole where time is believed to be stopped. Traveling at the speed of light will also freeze time but our mass will get closer and closer to zero if we traveled at the speed of light we'd disappear. No one knows to where. But as far as pluto goes the only difference would be if pluto revolved slower or faster in velocity than the earth which it most likely does, but the difference will only result in less than a second of time over a period of 200 or so earth years.

2007-05-10 07:58:51 · answer #3 · answered by Josh 3 · 0 0

All I was saying is that your body ages because it's a chemical process; how many times you go around the sun doesn't mean anything. Fruitflies on the shuttle didn't die after three orbits just because their lifespan is about 3 days

2007-05-10 07:35:13 · answer #4 · answered by Gene 7 · 0 0

The twin on Pluto would *physically* age less than the one on Earth. Gravity is one of the major contributors to the human aging process, and on Pluto the gravity is less therefore biological aging would proceed slower than on Earth where the gravity is stronger.

2007-05-10 07:34:11 · answer #5 · answered by Chug-a-Lug 7 · 0 1

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