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<p>[QUOTE="dltsrq, post: 4902475, member: 75482"]Everything is in motion. When we look into space, we are looking back in time. The further away an object is, the further back in time it is. The best way I've found to come to grips with this conundrum is to look at the visible universe like the concentric layers of an onion where each layer represents a snapshot of the universe at a particular time in the past. How the various layers relate to one another is a much more difficult question. I'm having a little trouble conceiving how an object might appear to us simultaneously from different apparent positions and different time-layers of the onion. The object would have to have effectively moved (in an admittedly Newtonian sort of way) at greater than than the speed of light between those two apparent positions. But then again, I'm having trouble wrapping my mind around all sorts of things these days.[/QUOTE]</p><p><br /></p>
[QUOTE="dltsrq, post: 4902475, member: 75482"]Everything is in motion. When we look into space, we are looking back in time. The further away an object is, the further back in time it is. The best way I've found to come to grips with this conundrum is to look at the visible universe like the concentric layers of an onion where each layer represents a snapshot of the universe at a particular time in the past. How the various layers relate to one another is a much more difficult question. I'm having a little trouble conceiving how an object might appear to us simultaneously from different apparent positions and different time-layers of the onion. The object would have to have effectively moved (in an admittedly Newtonian sort of way) at greater than than the speed of light between those two apparent positions. But then again, I'm having trouble wrapping my mind around all sorts of things these days.[/QUOTE]
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