Galaxies Made Of Nothing? 9
Ant writes: "There's an interesting article from
theorists attempting to explain some of the "missing mass"
in the universe now say there may be entire galaxies that are
dark. The new idea, proposed by Neil Trentham of the
University of Cambridge, along with colleagues Ole Moller
and Enrico Ramirez-Ruizof, suggests that for every normal,
star-filled galaxy, there may be 100 that contain nothing, or
at least nothing that we understand."
Re:URL for paper (Score:1)
Re:Oh, no! (Score:1)
Nice one, HM.
OK,
- B
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whoa.... (Score:1)
Some mindless nothings (Score:2)
It's also known to exist.
IMHO, "Dark Matter" is the invention of physicists who indulge in eating curiously-coloured mushrooms far too often. In science, the best theories are the simplest, not the most elusive.
URL for paper (Score:2)
The Assayer [theassayer.org] - free-information book reviews
Re:URL for paper (Score:2)
Also, it's a common misconception that black holes are like cosmic vacuum cleaners. Stuff normally just orbits past a black hole without passing through the event horizon. That haze in the photo is stars, not gas, so there's no friction to help stuff slow down instead of orbiting past.
For persepective, try going to this page [dao.nrc.ca] and typing in a random NGC galaxy number (ngcxxx, where the x's are random digits). If you do a few of these, you'll probably notice a lot of them have funky shapes. Sometimes this can be attribited to something like a recent collision, and sometimes you just have to say it's a funky-shaped galaxy and we don't know why. I skimmed their paper, and they don't even refer to this particular galaxy in it.
The Assayer [theassayer.org] - free-information book reviews
Oh, no! (Score:2)
___
I like it! (Score:3)
Re:URL for paper (Score:4)
No, not a picture of a dark galaxy... a picture of a visible galaxy with a trail of material streaming off like it has just had a brush with another, though there's no other in sight.
BTW, the
And while we're on the topic, there are several cosmology articles in the January Scientific American, which was still on the shelves 2-3 days ago.
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