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← Vast Structure of Satellite Galaxies & Star Clusters Discovered Surrounding Milky Way --Nixes Existence of Dark Matter in Universe

Vast Structure of Satellite Galaxies & Star Clusters Discovered Surrounding Milky Way --Nixes Existence of Dark Matter in Universe - Comments

nurnord's Avatar Comment 1 by nurnord

Yet again, the 'Read more' link is not working...and I really wanted to !

Thu, 26 Apr 2012 13:56:54 UTC | #937470

/Mike's Avatar Comment 2 by /Mike

broken link fixed

Thu, 26 Apr 2012 14:03:05 UTC | #937472

Anvil's Avatar Comment 3 by Anvil

Confused here?

Is this saying that there is actually 23% more matter (protons, neutrons, electrons) in the universe than we originally thought?

Anvil.

Thu, 26 Apr 2012 14:48:13 UTC | #937482

Alan4discussion's Avatar Comment 4 by Alan4discussion

There is no reason why the plains of colliding galaxies should match, so they could initially be at any angle.

If additional visible matter is being found this could have interesting implications for the theories about "dark matter".

Thu, 26 Apr 2012 15:15:29 UTC | #937491

Daryl 's Avatar Comment 5 by Daryl

Totally irrelevant. A bronze age scribe already knew the secret of the universe, and passed it down to us with no changes whatsovever. There. Done. 7 Days. Any questions?

Thu, 26 Apr 2012 16:09:09 UTC | #937502

Sjoerd Westenborg's Avatar Comment 6 by Sjoerd Westenborg

Thu, 26 Apr 2012 19:08:47 UTC | #937531

RobertJames's Avatar Comment 7 by RobertJames

So if this nixes dark matter, what causes gravitational lensing around distant galaxy clusters? I was under the impression that it proved the existence of dark matter.

Thu, 26 Apr 2012 23:08:22 UTC | #937572

Hypnos7's Avatar Comment 8 by Hypnos7

You can read Kroupa's whole argument against the existence of dark matter here. He seems to be in the modified gravity camp, though all the theories of modified gravity thought up so far have severe theoretical problems or are quite complex to match the behavior that works so well with dark matter. It's difficult to explain the combination of galaxy rotation curves, structure formation, cosmic microwave background spectrum and cluster X-rays and lensing without some invisible matter.

It is true that the characteristics of dwarf spheroidal galaxies never seem to line up completely with the dark matter hypothesis, but modified gravity has a lot more work to do to match the explanatory power of dark matter.

Fri, 27 Apr 2012 00:13:23 UTC | #937586

zengardener's Avatar Comment 9 by zengardener

I'm with RobertJames.

I thought "Dark Matter" was just matter that did not shine, and which we cannot identify. If they figured out what some of it is, that would only be confirmation that there was something there all along.

If the space between galaxies is thick with the debris left over from those galaxies colliding, then would we find less darkmatter in galaxies as we look to the distant past? But then, in the distant past, there would be matter that had not yet been pulled into a galaxy to start with.

Too bad we don't have any FTL probes.

Fri, 27 Apr 2012 06:07:50 UTC | #937624

Metamag's Avatar Comment 10 by Metamag

Articles like this is why I don't bother with any space stuff, it's completely irrelevant. Ultimately it's just about flimsy aloof constructs in your head bearing no impact on human life whatsoever.

Fri, 27 Apr 2012 07:10:18 UTC | #937630

Graxan's Avatar Comment 11 by Graxan

Comment 10 by Metamag :

Articles like this is why I don't bother with any space stuff, it's completely irrelevant. Ultimately it's just about flimsy aloof constructs in your head bearing no impact on human life whatsoever.

This comment smacks of incuriosity. How can research of this kind be irrelevant? These works of theory and observation help to define our place in the cosmos and refine our understanding of the laws of physics which ultimately lead to new technologies that can help mankind. I beg you to rethink, sir!

Fri, 27 Apr 2012 09:35:38 UTC | #937651

Anaximander's Avatar Comment 12 by Anaximander

How can research of this kind be irrelevant?

Without dark matter there cannot be galaxies. Without galaxies there cannot be us. Without us nothing can be relevant to us. So, if this article is right, how can it be relevant to us?

Fri, 27 Apr 2012 10:56:32 UTC | #937665

Vorlund's Avatar Comment 13 by Vorlund

This is going to confuse Dinesh D'Souza who makes links between the discovery of dark matter that we cannot directly observe to other invisible stuff like doG.

Fri, 27 Apr 2012 11:11:27 UTC | #937667

Schrodinger's Cat's Avatar Comment 14 by Schrodinger's Cat

Hmm......so this dark matter that has been nixed and doesn't really exist is now performing the amazing feat of colliding with ordinary matter 10,000 times more frequently than was thought.

http://www.space.com/15435-dark-matter-particles-collide-human-body.html

Sat, 28 Apr 2012 08:08:27 UTC | #937915

Alan4discussion's Avatar Comment 15 by Alan4discussion

Comment 7 by RobertJames

So if this nixes dark matter, what causes gravitational lensing around distant galaxy clusters? I was under the impression that it proved the existence of dark matter.

Gravitational lensing proves that gravity bends light and can focus it in certain places. Dark matter would only be involved in calculating the matter in, and gravity of, the distant galaxies.

Sat, 28 Apr 2012 10:42:58 UTC | #937938

Vicar of Art on Earth's Avatar Comment 16 by Vicar of Art on Earth

Dogma never changes and Science does and bright apes adapt to it.

While the religious pundts may have to adjust to Dark Matter not being god, there is still dark energy and other natural phenomena to justify dogmatic belief? Black holes can be angels reporting back to the big guy who lives in the twelth demension on the other side of the event horizon demonstrated by information is never destroyed to is available to be asumpted.

I favor god as an electron that can be anywhere and moves around time, although the theological implications of proability over prophecy would have to be worked out.

Lensing by Galaxies and groups are just god looking through from the heavenly dimension, and we know there are an infinate number of dimensions so one has to hold God and Jesus.

Maybe the rapture is real and Jesus is an invader from the dimension where he does have magical powers.

Wonderful article and back to the here and now dimension.

Sun, 29 Apr 2012 16:16:25 UTC | #938175

MEB1976's Avatar Comment 17 by MEB1976

This seems like a classic case of the need to remain intelligently agnostic about a major issue that relates to the origins and makeup of the cosmos. If true and confirmed, this will mean that much of the work in physics and related fields over the last ten (or more?) years will need to be rethought. At this point, we need to wait until other scientists "weigh in" (no pun intended) on the issue, see if the findings can be independently confirmed, and the rest of the scientific method plays out. That is the hallmark and the great superiority of the naturalistic-scientific method.

So now when people ask me if I am an agnostic or an atheist, I can say "both."

MEB

Mon, 30 Apr 2012 22:13:27 UTC | #938477

Skywatcher_3025's Avatar Comment 18 by Skywatcher_3025

I always thought that Milky Way has only two satellites - the Magellan's Clouds and they are known for a rather long time. So, it is strange for me, how there could be explored more in the optical range.

Fri, 04 May 2012 03:48:05 UTC | #939528

Alan4discussion's Avatar Comment 19 by Alan4discussion

Comment 18 by Skywatcher_3025

I always thought that Milky Way has only two satellites - the Magellan's Clouds and they are known for a rather long time. So, it is strange for me, how there could be explored more in the optical range.

There are details and a map here:-

http://en.wikipedia.org/wiki/List_of_Milky_Way%27s_satellite_galaxies

Sun, 06 May 2012 10:34:11 UTC | #940129