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Discussion and Debate
Discussion and Debate
Physical & Life Sciences
Non-Mainstream and Controversial Science
Has Geocentrism become less popular?
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<blockquote data-quote="Bradskii" data-source="post: 77391387" data-attributes="member: 412388"><p>Again, they are not moving through space. They could well be static. But the <em>space</em> is expanding. And the further apart two objects are, the faster is the distance between them expanding. So you could look in one direction and it would <em>appear</em> that galaxy A is moving away from us at 0.75 the speed of light. Look in the other direction and you'd see another galaxy B doing exactly the same. But...if you were standing somewhere in galaxy A then the space between you and B is expanding faster than the speed of light can cross it. So light from B would never reach you. </p><p></p><p>Speed equals distance/time. So something has to <em>move</em> X distance through space relative to any given point over time T to get a speed of X/T, relative to the given point. Both galaxies could be static. They aren't moving (they will be moving in some direction but assume they are not). Just like the dots on the balloon. So their speed relative to any other static object is zero. But...the distance between them is getting bigger.</p></blockquote><p></p>
[QUOTE="Bradskii, post: 77391387, member: 412388"] Again, they are not moving through space. They could well be static. But the [I]space[/I] is expanding. And the further apart two objects are, the faster is the distance between them expanding. So you could look in one direction and it would [I]appear[/I] that galaxy A is moving away from us at 0.75 the speed of light. Look in the other direction and you'd see another galaxy B doing exactly the same. But...if you were standing somewhere in galaxy A then the space between you and B is expanding faster than the speed of light can cross it. So light from B would never reach you. Speed equals distance/time. So something has to [I]move[/I] X distance through space relative to any given point over time T to get a speed of X/T, relative to the given point. Both galaxies could be static. They aren't moving (they will be moving in some direction but assume they are not). Just like the dots on the balloon. So their speed relative to any other static object is zero. But...the distance between them is getting bigger. [/QUOTE]
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Has Geocentrism become less popular?
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