Do We Really Need Dark Matter?
Hubble mosaic of massive galaxy cluster MACS J0717.5+3745, thought to be connected by a filament of dark matter. Credit: NASA, ESA, Harald Ebeling (University of Hawaii at Manoa) & Jean-Paul Kneib (LAM)
Even though teams of scientists around the world are at this very moment hot on the trail of dark matter – the “other stuff” that the Universe is made of and supposedly accounts for nearly 80% of the mass that we can’t directly observe (yet) — and trying to quantify exactly how so-called “dark energy” drives its ever-accelerating expansion, perhaps one answer to these ongoing mysteries is maybe they don’t exist at all.
This is precisely what one astronomer is suggesting in a recent paper, submitted Dec. 3 to Astrophysical Journal Letters.
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Read the rest of Do We Really Need Dark Matter? (600 words)
© Jason Major for Universe Today, 2012. | Permalink | 2 comments |
Post tags: Big Bang, Cosmology, Dark Energy, Dark Matter, Einstein, galaxies, Magain, relativity, time, universe
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2012-12-07 17:02:18
Source: http://www.universetoday.com/98864/do-we-really-need-dark-matter/
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