NASA Finds Direct Proof of Dark Matter - Unmanned Spaceflight.com

NASA Finds Direct Proof of Dark Matter, Chandra returns findings

lyford View Member Profile	Aug 22 2006, 08:00 PM Post #1
Senior Member Group: Members Posts: 1281 Joined: 18-December 04 From: San Diego, CA Member No.: 124	Chandra Press Release QUOTE Dark matter and normal matter have been wrenched apart by the tremendous collision of two large clusters of galaxies. The discovery, using NASA's Chandra X-ray Observatory and other telescopes, gives direct evidence for the existence of dark matter. "This is the most energetic cosmic event, besides the Big Bang, which we know about," said team member Maxim Markevitch of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass. These observations provide the strongest evidence yet that most of the matter in the universe is dark. Despite considerable evidence for dark matter, some scientists have proposed alternative theories for gravity where it is stronger on intergalactic scales than predicted by Newton and Einstein, removing the need for dark matter. However, such theories cannot explain the observed effects of this collision. Apologies if this is a repost -------------------- Lyford Rome "Zis is not nuts, zis is super-nuts!" Mathematician Richard Courant on viewing an Orion test

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ljk4-1 View Member Profile	Sep 20 2006, 01:13 PM Post #2
Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430	Is dark matter just so much very fine dust? http://arxiv.org/abs/astro-ph/0609500 -------------------- "After having some business dealings with men, I am occasionally chagrined, and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853

Posts in this topic

lyford NASA Finds Direct Proof of Dark Matter Aug 22 2006, 08:00 PM

nprev Okay...so, the question remains, just what the hec... Aug 23 2006, 01:29 AM

Rob Pinnegar QUOTE (nprev @ Aug 22 2006, 07:29 PM) I... Aug 23 2006, 03:43 AM

tty QUOTE (nprev @ Aug 23 2006, 03:29 AM) Oka... Aug 23 2006, 08:11 PM

ljk4-1 QUOTE (tty @ Aug 23 2006, 04:11 PM) Poul ... Sep 7 2006, 07:59 PM

The Messenger QUOTE (nprev @ Aug 22 2006, 07:29 PM) Oka... Sep 11 2006, 04:20 AM

chris There is a very nice explanation of this paper her... Aug 23 2006, 08:47 AM

lyford All right you WIMPs, here is a link to the actual ... Aug 23 2006, 06:12 PM

Mongo I would not be so quick to dismiss MOND-like theor... Sep 7 2006, 05:56 PM

tfisher A response from the MOND camp is in the following ... Sep 12 2006, 01:21 AM

Mongo QUOTE (tfisher @ Sep 12 2006, 01:21 AM) A... Sep 12 2006, 02:58 AM

ljk4-1 Is dark matter just so much very fine dust? http:... Sep 20 2006, 01:13 PM

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