well, it takes 365 1/4 days for the earth to complete one orbit of the sun.
2007-12-13 08:49:04
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answer #1
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answered by ngc7331 6
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Actually, the AVERAGE year is 365.25 days. Any particular year can be 4 hours 48 minutes longer or shorter (0.20 days). That's the time for the Earth to get back to nearly the same spot in it's orbit about the sun (it never gets back to EXACTLY the same spot it was a year ago.)
And there are many different definitions for "year", be careful not to mix them up.
2007-12-13 09:31:19
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answer #2
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answered by morningfoxnorth 6
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It takes 365.25 days for the Earth to get back to the exact same spot in it's orbit about the sun.
A siderial day and a sydonic day are two different things - one is when the sun gets back to the same exact spot in the sky, the other is when a *star* gets back to the same exact spot in the sky.
Since Earth orbits the sun, it take us about 4 minutes longer each day for the sun to get from one noon to the next noon, than it does for the same star to rise over the horizon. That's because the sun appears to move (because we're orbiting), and the star does not. (It's *always* in the same position.)
2007-12-13 08:49:50
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answer #3
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answered by quantumclaustrophobe 7
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It simply takes that long to go around the sun.
If the earth was closer to the sun it would be warmer and the year would be shorter, but not by as much as you think since the speed of the earth would have to be reduced for it to reach a stable orbit that is closer to the sun. The same can be said if the earth was in a wider orbit. The earth is in it’s current orbit because of the speed and mass which found an orbital equilibrium.
Change the mass of the earth or its speed and you would change its orbital path.
2007-12-13 08:49:41
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answer #4
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answered by Dan S 7
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The rate that Earth spins around has nothing todo how long it takes Earth go revolve entirely around the sun. Even if Earth spins a day in 100 hrs, it probably won't affect how long it takes to revolve arould the sun.
2007-12-13 08:51:42
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answer #5
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answered by Carrie 2
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Pick a round number, then.
We can believe anything we like, after all!
We have religious freedom in this country!
Pi=3 sounds good.
Any takers?
:-)
2007-12-13 08:49:15
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answer #6
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answered by Anonymous
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Hence the necessity for a "leap year" every four years-to keep the calendar year consitent with the solar year....
2007-12-13 09:06:31
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answer #7
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answered by Monkeyboi 5
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i think a day now has 16 hours, unoficially :P
2007-12-13 08:49:59
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answer #8
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answered by adicrst 2
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