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Thread: A couple of questions

  1. #1 A couple of questions 
    Forum Freshman
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    Does anybody know roughly how much regular matter there is in the universe (excluding dark matter ect.)? And does anybody know how much matter a black hole consumes on average?


    I'm always confused.
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  3. #2  
    Administrator KALSTER's Avatar
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    I read that as little as 20% of the universe could be normal matter. They get this from how the universe is expanding now inrelation to how long ago the big bang was. The amount of matter that a black hole consumes, depends obviously on the amount of matter available to it. I think it can probably consume as much matter as anything can throw at it. Just think of the massive black holes present in galactic centres.


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    Forum Ph.D.
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    Maybe I'm thinking of something else but I thought I remember hearing that normal matter is estimated only at about 0.5% of the total matter. Of course, I'm feeling lazy so someone else can look that up if interested.
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    Administrator KALSTER's Avatar
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    Both of us could be correct. I think they change there estimates regularly based on if they are thinking the universe will expand forever or start contracting eventually
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