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    • CommentAuthorkorkskrew
    • CommentTimeMay 5th 2016
     
    Did someone rename WIMP's MACHO's when I wasn't paying attention, or are they separate coexisting theories?
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      CommentAuthorAngus
    • CommentTimeMay 5th 2016
     
    More or less opposites. Weakly Interacting Massive Particles are postulated elementary particles that interact only by weak force. Massive Compact Halo Objects are astronomical objects made of ordinary matter that don't happen to be visible.
    • CommentAuthorkorkskrew
    • CommentTimeMay 5th 2016
     
    Ah. Thanks.

    So MACHO's would be all the rogue planets and black holes and shit flying around the galaxy?
  1.  
    Another cold DM candidate is the axion - also currently hypothetical: postulated but as yet unobserved.
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      CommentAuthorSwissie
    • CommentTimeMay 5th 2016
     
    Can a black hole get sucked in by another black hole?
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      CommentAuthorTrim
    • CommentTimeMay 5th 2016
     
    Well a black hole can deliver another black hole of a few kilos.
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      CommentAuthorAngus
    • CommentTimeMay 5th 2016
     
    Posted By: SwissieCan a black hole get sucked in by another black hole?


    That's what LIGO detected last month.
  2.  
    Posted By: TrimWell a black hole can deliver another black hole of a few kilos.
    No
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      CommentAuthorTrim
    • CommentTimeMay 5th 2016
     
    They are millions of Africans who would disagree with you.
  3.  
    Oh dear.
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      CommentAuthorTrim
    • CommentTimeNov 11th 2016 edited
     
    DTN

    Stephen Hawking just published a new solution to the black hole information paradox.

    http://deepthinkingnews.com/black-hole-paradox/?ad=UFO1&adgrp=1&sitenm=phys.org

    Six months old.
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      CommentAuthorpcstru
    • CommentTimeNov 11th 2016
     
    Posted By: Andrew PalfreymanThere's certainly something that gravitates. That's enough to render the discussion germane.
    Whatever its composition.

    The other possibility is that our assumptions about gravity itself are wrong over large scales. Oh, and god did it.
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      CommentAuthorTrim
    • CommentTimeNov 11th 2016
     
    Which one?
  4.  
    The one capable of creating a stone so heavy that he cannot lift it
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      CommentAuthorjohnq
    • CommentTimeNov 15th 2021