I always felt like dark matter was a handwave.
If it exists why doesn't it all slowly collect in gravity wells making the gravity wells deeper in a positive feeback loop until everything is black
Team member Pavel Kroupa, professor for astronomy at the University of Bonn, adds “We were baffled by how well the distributions of the different types of objects agreed with each other”. As the different companions move around the Milky Way, they lose material, stars and sometimes gas, which forms long streams along their paths. The new results show that this lost material is aligned with the plane of galaxies and clusters too. “This illustrates that the objects are not only situated within this plane right now, but that they move within it”, says Pawlowski. “The structure is stable.”
Kroupa concludes by highlighting the wider significance of the new work. “Our model appears to rule out the presence of dark matter in the universe, threatening a central pillar of current cosmological theory. We see this as the beginning of a paradigm shift, one that will ultimately lead us to a new understanding of the universe we inhabit.”
Originally posted by LightSpeedDriver
reply to post by XPLodER
In a way it's reminiscent of a slightly too-good night at The Pub.
"They lose material"
They lose things, keys, wallet, the ability to walk...
"They lose stars"
They lose the ability to see clearly (hope it's not the illegal and dodgy vodka, that will blind you!)
"They lose gas"
Well, nuff said methinks. Another pint for you John?
In all seriousness it sounds a little weird when you consider that science has apparently proven (I could be wrong) that The Universe is in fact expanding and speeding up and...getting further away from things constantly?
edit on 25/4/12 by LightSpeedDriver because: Typo
ETA I think dark matter might turn out to be darker than we imagined...edit on 25/4/12 by LightSpeedDriver because: ETAedit on 25/4/12 by LightSpeedDriver because: Correction
Using the data they’d extracted, the team built several models (varying the dark matter composition) to generate galaxy structures. In so doing, they found that the ratio of mass to light from just the stars in their models (minus gas and dark matter) for some elliptical low mass galaxies did indeed look like spiral galaxies. But they also found some that did not, which means that the IMF is not universal. They also found generally the same results no matter which dark matter composition they used, which means of course that the results obtained were independent of mass.
And thus the Dark Matter can be removed from the equation.
Originally posted by Americanist
reply to post by XPLodER