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Old 12-03-11, 08:09 PM   #1
Gerald
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Originally Posted by Skybird View Post
So the sun revolves around the Earth now?

Since I assume you do not refer to the galactic parallax movement, or even just the movement of solar system inside this one galaxy, but refer to the relative position changes of Earth compared to the sun, it might be more precise to point out that the Earth has moved so and so far in its orbit around the Sun in those 8 minutes (speed the slower the more distant from the sun it currently is), and that we do see the sun in the state it was in 8 minutes ago. Eyes are a time machine, the more distant an object is that we look at, the longer backwards in time we watch. In principle, we never see with our eyes the real, immediate "present".

I can be a smartass, I know.



Which is a statement about distance, as I said, and still not about time taken.
I hope ya have plenty of time, this could take some time........I be back
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Old 12-03-11, 08:16 PM   #2
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I hope ya have plenty of time, this could take some time........I be back
No need to spend time on it, Vendor! Believe me - lightyears (ly) or lightdays or lightseconds are used as a distance unit in any astronomical science book you could think of. It is established nomenclatura. No need to debate anything there!
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Old 12-03-11, 08:21 PM   #3
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No need to spend time on it, Vendor! Believe me - lightyears (ly) or lightdays or lightseconds are used as a distance unit in any astronomical science book you could think of. It is established nomenclatura. No need to debate anything there!
My latter comment was more directed as a joke, I have the picture clear....and understand the theoretical part, without being "smartass"
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Old 12-03-11, 09:15 PM   #4
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...and understand the theoretical part, without being "smartass"
Better a Smartass than a Dumbass.
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Old 12-03-11, 09:21 PM   #5
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Better a Smartass than a Dumbass.
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Old 12-03-11, 09:54 PM   #6
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I like how they discovered the anomaly a while back, where the voyager probes were not where they were supposed to be. Theories abounded about how the current theories on solar winds werre wrong, or there was an unseen border force slowing the craft.

Turned out the nuclear power cells were heating the leading edges of the craft a little more than the trailing ones, and that very slight radiation of energy slowed the craft enough to have physicists pulling their hair out for years. Apparently it took some deep computer modelling to figure it out.

Space.com probably has some good links on it.
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Old 12-03-11, 10:01 PM   #7
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Ok, I have to be the real smartass now. It only takes light 8 minutes to go from the SURFACE of the sun to go to the earth. However, from photon creation in the core of the sun, to the the surface of the sun it is supposed to take hundred thousands of years before it get's there.

http://en.wikipedia.org/wiki/Sun#Core

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