I am a bit skeptical, but this deserves 6.0 out of 10.0
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Possible evidence of dark matter discovered
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Possible evidence of dark matter discovered
Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.Tags: None
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After a decades-long search, astronomers may finally have found the first sign of dark matter. That's the invisible substance that scientists believe makes up the bulk of our universe, since visible matter accounts for only about 20 percent of our universe by weight.
According to the Planck mission team, and based on the standard model of cosmology, the total mass–energy of the known universe contains 4.9% ordinary matter, 26.8% dark matter and 68.3% dark energy. Thus, dark matter is estimated to constitute 84.5% of the total matter in the universe, while dark energy plus dark matter constitute 95.1% of the total content of the universe.
I'm guessing that what this article is trying to say is that there is an estimated 5 times as much dark matter as visible matter in the universe.
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Originally posted by phank View PostNow, generally the "standard model" is used, which says:
Saying that "visible matter accounts for only about 20 percent of our universe by weight" is really confusing. Weight is a measure of response within a gravitational field, whereas mass is an intrinsic quality regardless of any gravitational field. And dark energy has mass (remember E=Mc^2?). So visible matter is only at most about 5% of the mass in the universe.
I'm guessing that what this article is trying to say is that there is an estimated 5 times as much dark matter as visible matter in the universe.
Explanation here from the article:
Last edited by shunyadragon; 12-17-2014, 06:16 PM.Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.
Comment
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More detail I believe on the same thing. This is better then the Huffington Post
Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.
Comment
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