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Originally Posted by Spacemonkey
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Originally Posted by thedoc
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Originally Posted by But
Sorry, you have no fucking clue what you are talking about.
I think my explanation was pretty clear. Read it again and tell me what part you don't understand.
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You're looking at the Sun. Light travels in a straight line, so along that straight line there must be a position where the Sun was at some point in the past. Let's say you're right and the Sun isn't where you see it. But light is hitting you from that direction. It must have traveled in a straight line. Draw that line. In your mind or in a a diagram where you look at the solar system from above. The line misses the Sun. But the Sun was never on that line, not 8 minutes ago, not a hundred years ago. Contradiction.
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I never claimed that the Sun was not on the line, that is your strawman, and another logical fallacy. I stated that the sun was on the line, from which the photons came, but 8.5 minutes ago. The Sun might have a relatively stationary position in the sky but the observer on Earth is moving, so the observers view of the sun will be changing position in the sky. |
With a stationary Sun it is not possible for the Sun to have ever been on that line. The Sun's rays cannot emanate from a point where the Sun previously was, as the Sun hasn't moved. The Earth and observer have. The Earth and observer move onto a new radial from the Sun, which is the same line along which the light now at your eye has always been traveling. |
Yes, and the photons that left the Sun 8.5 minutes ago are on a different radial that will miss the observer on the Earth.
But the Sun is moving through space very fast, so it was in a different position 8.5 minutes ago when the photons left the Sun. The observer and the photons will intersect 8.5 minutes after the photons have left the Sun, and those photons will have traveled a straight line, but the Sun will not be in that position, nor in that same position in the sky relative to the observer on the Earth.