Recent content by Greenlight

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    B For every action there is an equal and opposite reaction

    No? well i guess we could make one up...we can call it dark action. Now my equations work! j/kbut really isn't there dark energy? doesn't energy do work? isn't work action?
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    B For every action there is an equal and opposite reaction

    if the universe is expanding, what is the equal and opposite reaction to this action?
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    B Expansion or contraction -- how do we know which?

    I guess this is where one of us is hung up. I don’t understand how you can have one without the other. But really this is not of concern. Space expands. Does it contract as well?
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    B Expansion or contraction -- how do we know which?

    if spacetime itself is not expanding then how are distant objects capable of moving away from us faster than light?
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    B Expansion or contraction -- how do we know which?

    if spacetime itself is not expanding then how are distant objects capable of moving away from us faster than light?
  6. G

    B Expansion or contraction -- how do we know which?

    How is proper distance determined? aren't we delayed in all of our observations giving us an apparent distance?
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    B Expansion or contraction -- how do we know which?

    so the theory of black hole warping spacetime is a fallacy?
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    B Expansion or contraction -- how do we know which?

    The apparent distance to an object does not determine whether space/time is expanding or not. are you certain that the ruler is not getting smaller or bigger? A meter is defined by constraints in space/time. When space/time changes (expands or contracts), wouldn't those constraints and thus...
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    B Expansion or contraction -- how do we know which?

    i thought Einstein showed us that space and time are somehow facets of the same thing. can expansion scalar be negative? im not even talking about motion at all. I am talking about the contraction/expansion of spacetime.
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    B Expansion or contraction -- how do we know which?

    This is exactly my question. How do you determine if you are contracting or expanding without a reference frame. every observer in the now will be looking at an observer in the past. Thus if there is accelerated contracting then the person in the present doing the observation will be getting...
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    B Expansion or contraction -- how do we know which?

    that is a nice definition, but i don't think you understood the question because it doesn't address the relativity of expansion.
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    B Expansion or contraction -- how do we know which?

    Space/time is relative. What is the expansion relative to? Is there a reference point of no expansion to make a comparison? Accelerated contraction would appear to be expansion by an observer looking back in time so how can we be certain that the universe is expanding instead of collapsing at...
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