INVISIBLE OR NONEXISTENT? A composite image of the galaxy cluster Abell 520 shows the inferred presence of matter, primarily dark matter, in blue. -- X-ray: NASA/CXC/UVic./A.Mahdavi et al.; Optical/Lensing: CFHT/UVic./A.Mahdavi et al.
Posted on 11/08/2009 6:07:35 PM PST by SunkenCiv
What if the discrepancy arises from a flaw in our theory of gravity rather than from some provider of mass that we cannot see? In the 1980s physicist Mordehai Milgrom of the Weizmann Institute of Science in Rehovot, Israel, proposed a modification to Newtonian dynamics that would explain many of the observational discrepancies without requiring significant mass to be hidden away in dark matter. But it fell short of describing all celestial objects, and to incorporate the full span of gravitational interactions, a modification to Albert Einstein's theory of general relativity is needed. A review article in the November 6 Science checks in on the status of these modified-gravity theories, including a proposal put forth by physicist Jacob Bekenstein of The Hebrew University of Jerusalem in 2004. Pedro Ferreira, a University of Oxford cosmologist and one of the review paper's co-authors, says that there is good news and bad news for proponents of such models.
(Excerpt) Read more at scientificamerican.com ...
INVISIBLE OR NONEXISTENT? A composite image of the galaxy cluster Abell 520 shows the inferred presence of matter, primarily dark matter, in blue. -- X-ray: NASA/CXC/UVic./A.Mahdavi et al.; Optical/Lensing: CFHT/UVic./A.Mahdavi et al.
could i be added to this ping list?
Interesting.
I’ve studied this as well, and often wondered if the problem wasn’t dark matter, but rather our understanding of gravity.
Will this make me look 10 pounds thinner on Earth, or do I have to travel to another planet or dimension to achieve that? ;)
I just dealt with my dark matter by adding a little Clorox to the wash cycle.
Thank you, just shared this with my daughter, the Physicist student.
Cold Dark Matter: An Exploded View
Now I know what I'm going to lay awake tonight thinking about. :D
Perfect!!! V’s wife.
It looks like what some people call “modern art”.
Please add me to the ping list of all this KooL science stuff!!!
Please add me to ping.
New twist on an old question: "Does this frame of reference make me look fat?"
That’s heavy!
I don’t think dark matter exists. I think its something else...
>>>I don’t think dark matter exists. I think its something else..
Or perhaps someWHERE else. Assuming the theories of tiered multidimensional universes have some basis there is the possibility of gravitational bleedthrough.
A review article in the November 6 Science checks in on the status of these modified-gravity theories
***I couldn’t find that article. I was hoping to check & see if some of my favorite cosmologists were there, such as the surfer dude who has a Theory of Everything, and Dr. Paul La Violette’s Subquantum kinetics.
SubQuantum Kinetics, wide ranging unifying cosmology theory by Dr. Paul LaViolette
http://www.freerepublic.com/focus/f-news/1884938/posts
Wednesday, August 22, 2007 12:00:43 PM · by Kevmo · 68 replies · 1,537+ views
THE STARBURST FOUNDATION ^ | January 2007 | Dr. Paul LaViolette
Surfer dude stuns physicists with theory of everythingNov 14, 2007 ... the headline is really quite deceptive, the surfer dude actually holds a .... My own personal theory of “everything” is a tad more concise. ... Disclaimer: Opinions posted on Free Republic are those of the individual ...
http://www.freerepublic.com/focus/f-news/1925732/posts
I like that, got a good laugh.
No Scientific American for me today, thanks.
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