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(Time)   The universe has been missing 80% of its mass, and scientists may have found it, right near Uranus   (science.time.com) divider line 56
    More: Followup, Uranus, universe, Alpha Magnetic Spectrometer, WIMPs, dark matter, LHC, positrons, Nuclear Physics  
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6461 clicks; posted to Geek » on 05 Apr 2013 at 10:50 AM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-04-05 05:56:55 PM
Fail Subby, no mention of me let alone my anus in TFA, Good fodder article though
 
2013-04-05 06:07:56 PM

revrendjim: Yes. We would "see" that stuff because it would block the light from sources behind it.


Even more than that, the power spectrum analysis of the cosmic microwave background sets a limit on the amount of baryonic matter in the universe.
 
2013-04-05 08:15:05 PM
I just love the fact that Fritz Zwicky, the guy that noticed the discrepancy a long time ago, was an unrepentent curmudgeon. He famously called some of his colleagues "spherical bastards". I.e. they
were bastards no matter how you looked at them. Cracked me up the first time I heard this. One
wonders if his personal style delayed the field's acceptance of his observations...

ZAZ: Tommy Moo

Dark planets and such go by the collective name "massive compact halo objects" or MACHOs for short. There are experiments to detect them, e.g. searches for microlensing events. We don't see enough.


This is, BTW, proof that some scientists have a sense of humor. One has to believe this acronym was
chosen directly as a result of the chosen name of another possibility (WIMPs).
The other indications are the units for electrical conductance (i.e. inverse resistance: Mho), electrical elastance (i.e. inverse capacitance: Daraf), etc...

cheers
 
2013-04-06 04:45:42 AM

Tricky Chicken: I have always been a bit leery of dark energy/matter theories. And since I have a somewhat less than rudimentary understanding of what they are talking about, my opinion on the matter is unimportant.


Ya don't see that kind of honesty here everyday. Kudos to you, sir.
 
2013-04-06 05:39:34 AM
80% of the matter in the universe is "right near Uranus?"  That's a freakishly large Clingon.
 
2013-04-06 07:34:31 PM

mcgreggers99: "The Milky Way spins so fast it would fly apart if the gravity of some invisible matter weren't holding it together. Clusters of galaxies, buzzing around one another like angry bees, would similarly fragment and disperse. And when you run the gravitational numbers, the mysterious matter that keeps all that cosmic disintegration from happening should outweigh the familiar stuff by about four-to-one."


I'm just a lowly engineer, but It sounds like they just make up stuff like this to try to make sense of the order of the universe that we can't understand. Surely it has to be an invisible force or matter that we can't yet detect.....

(*spoiler alert*)
God's spinning the galaxy on a big stick.


There should be one coming out of his anus too.
 
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