Dark Energy.

Discussion in 'Science' started by tecoyah, Apr 12, 2018.

  1. tecoyah

    tecoyah Well-Known Member

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    Basically this is a term created to say we have no idea why our Universe seems to be expanding. I have a theory and would like it torn apart as much as possible....I request peer review.

    Dark energy is large scale Gravity. Our solar system and thus everything we observe is about 14 Billion years from the big bang event. we have no idea what someone 15 billion light years away sees. Perhaps our Universe is infinite and we only see our little part but gravity compounds, drawing everything outward. This would make us see unexplained expansion and in ways tackle dark matter as well. I would also point out that a Big Bang, like every explosion is a spherical event and this the most we will see at this point in our technology is the half between us and the Bang.
     
  2. GrayMan

    GrayMan Well-Known Member

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    What do you mean by gravity compunding and what causes it?

    The expansion of the universe isn't directly measured except for the closer galaxies. "Redshifting" is measured and we calculate distance and the acceleration of travel of the stars by how much redshifting occurs on galaxies way out there.
    Another thing can cause redshifting and that is the mass of the object. So the question is, how would compounding gravity effect the mass of surrounding objects? How is the higgs field effected by this?
     
  3. HereWeGoAgain

    HereWeGoAgain Well-Known Member

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    It's not the expansion, it is that the expansion is accelerating.

    Don't quit your day job. ;)
     
    Last edited: Apr 12, 2018
  4. wgabrie

    wgabrie Well-Known Member Donor

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    I talked to AboveAlpha about dark energy and I learned that dark energy is actually the creation of spacetime between us and distant galaxies.

    The universe is NOT infinite it has a limited size.

    We can already see the hot plasma field about 100,000 light years out from the big bang, and I think I've heard we can use lasers to 'see' even farther backwards in time. But that's backwards in time, not what's there now.

    But if you're talking about seeing the edge of the universe that's not possible. Not enough time had passed for the light from the outer edge of the universe to travel here for us to see it. And spacetime is being created in the gulf between us and the edge. We may never see beyond a certain point because with the accelerating creation of spacetime means eventually light can't cross the gulf because the growing gulf of spacetime is expanding faster than the speed of light.
     
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  5. HereWeGoAgain

    HereWeGoAgain Well-Known Member

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    He may have told you that but you didn't learn it. In order to learn it, it would have to be true.

    We don't understand dark energy. No one knows what it is.

    We use telescopes and can see back billions of years. To date, 9 Billion years.
     
    Last edited: Apr 13, 2018
  6. wgabrie

    wgabrie Well-Known Member Donor

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    Physicists know what dark energy does, they just don't know WHY it does that.
     
  7. WillReadmore

    WillReadmore Well-Known Member

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    Well, astrophysicists have measured what is happening. Current measurements have covered 140,000 quasars - a sample size hard to argue with.

    That 9 billion years is a great effort - 2/3's of the way! Of course, that last 1/3 is going to be more than just a serious problem, given the expansion rate of the universe.
     
  8. fmw

    fmw Well-Known Member

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    I still prefer the multiverse model. I also wouldn't get too carried away with making detailed descriptions of the big bang which is a theory, not necessarily a fact. After all whatever exploded had to come from something or somehwere.
     
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  9. tecoyah

    tecoyah Well-Known Member

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    I am rather fond of the recycling singularity....which can be seen as an offshoot or compliment to the Multi-Verse. Our universe eventually returning to the singularity stage before it blows up again in a new bang, one of innumerable versions taking place in something infinate.
     
  10. fmw

    fmw Well-Known Member

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    So you think the universe is still accelerating from the big bang. I like that better than dark energy. I don't like things that can't be detected or measured. They seem like excuses for a lack of knowledge. We don't sense them. We just fill a hole in our knowledge with mathematics.
     
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  11. tecoyah

    tecoyah Well-Known Member

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    Yes...there is absolutely no reason to think we are somehow at the beginning end or middle of the event and no one can know the extent or limitations of what we made up and call "Time".
     
  12. smallblue

    smallblue Well-Known Member

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    I can't even program my VCR.
     
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  13. ARDY

    ARDY Well-Known Member Past Donor

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    Gravity Drawing everything outward? Wouldn’t the same logic apply to our earth? Gravity drawing everything outward should cause our planet to explode outward, no?
    IMO One flaw in your understanding has to do with the nature of gravity.
    It’s strength is reduced by the square of distance. This means that objects very far away from each other will have minimal gravitational Impact. And, even if there was some large mass very far away that was drawing us outward.... in a similar way our mass would be drawing that mass inward
     
    Last edited: Apr 18, 2018
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  14. truth and justice

    truth and justice Well-Known Member

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    The term dark energy is used in the sense of the definition of dark being "magical". The term does not describe anything other than allowing all of us to ignore the elephant in the room that shows it's ugly head in the big bang theory. It is an obvious failure of the big bang theory.

    For no reason other than putting it out there - the speed of light at emitted time t0 is not the same as the speed of light at emitted time t1 (to<>t1) giving a new meaning to the apparent red shift of galaxies. Can give rise to a static universe. The further distance away the greater difference in received speed of light between receiver and transmitter. At t0, speed of light is same over whole universe. At t1, speed of light is same over the whole universe. A receiver sees this received light as a red shift. An observer outside the transmitter/receiver set observes the difference in light speed that the receiver receives from the transmitter when compared to the receiver's local light speed
     
  15. AlphaOmega

    AlphaOmega Well-Known Member Past Donor

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    not bad...Ive always wondered if we were just so small that we dont see the large object the galaxies are speeding towards
     
  16. WillReadmore

    WillReadmore Well-Known Member

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    But, the galaxies are speeding up - and not toward each other. In fact, they're accelerating away from each other.

    If there were a super attractor somewhere, even somehow surrounding our universe, the acceleration would be organized in a way that would indicate that. But, it is actually seen as operating between galaxies and galaxy clusters.

    Cool idea - perhaps sort of a "Mars Attacks" model. But, I haven't heard of evidence pointing in that direction yet.
     
  17. AlphaOmega

    AlphaOmega Well-Known Member Past Donor

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    not if we are inside of it and the mass in on the outside.
     
  18. WillReadmore

    WillReadmore Well-Known Member

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    Interesting second paragraph.

    I thought the term "dark matter" had more to do with the fact that it isn't directly detectable - no interaction with or production of photons, or other particles that we've learned how to detect.

    I doubt physicists would describe dark matter as magical, though I'm pretty much positive the popular press would.
     
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  19. WillReadmore

    WillReadmore Well-Known Member

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    No, that doesn't solve the problem.

    Physicists describe the force as acting between galaxies and galaxy clusters. Thus, it isn't a force that is organized toward the "outside".

    For example, two of these objects would be being pulled in the same direction if the force came from the "outside". That might not be true in the exact center of the "outside", but the catch is that this acceleration is detected throughout the observable universe - not in one location.
     
  20. AlphaOmega

    AlphaOmega Well-Known Member Past Donor

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    mmm no, the galaxies twice as far away are moving twice as fast, those three times as far...three times as fast. Seems organized to me.
     

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