What is Digg?3 Comments
- mgmirkin, on 05/21/2008, -0/+1Quite true. Doesn't help with galaxies being too "light" on matter. But, still interesting to see they're starting to find additional baryonic matter. :)
I think dark matter is just a giant kludge to cover up some gaping holes in current theories. But this isn't so much to do with "dark matter" as with gross structure of the universe...
If you thought the above was amusing, consider, that they seem to be finding baryonic "normal matter" in structures similar to those they vaguely "predicted" would contain non-baryonic (slightly nonsensical) "dark matter."
(Giant ropes of dark matter found in new sky survey)
http://space.newscientist.com/article/dn13362
(Astronomers Create 3D Map of Dark Matter )
http://www.space.com/scienceastronomy/070108_mm_da ...
(Mapping the Cosmic Web of Dark Matter)
http://universe.nasa.gov/press/2002/020410b.html
I find these articles amusing when compared to the articles I mentioned previously. the last article says "It shows that not only do the galaxies we see lie within larger Dark Matter clumps, but that these clumps are connected by "cosmic filaments" - bridges of Dark Matter connecting the clusters."
And yet, what do we see connecting clusters? Not "dark matter" but normal baryonic matter! Albeit extremely sparse plasma...
(Piece of Missing Cosmic Matter Found)
http://digg.com/space/Piece_of_Missing_Cosmic_Matt ...
In the first article above, they intimate that "dark matter" threads the universe. But we're finding large quantities of inter-galactic baryonic "normal matter," per these latest Hubble findings.
It seems like astronomy needs to get its house in order...
That's not even to MENTION the subject of "what if our distance measurements are incorrect?" Apparently, if they're wrong, then we mis-estimate size, mass, luminosity and energy output, making "normal galaxies" look "ultra-luminous," or "super-massive."
(The Antennae Galaxies Found To Be Closer To Us)
http://digg.com/space/The_Antennae_Galaxies_Found_ ...
("The Antennae" Fall Into Line)
http://digg.com/space/The_Antennae_Galaxies_Fall_I ...
If we've grossly overestimated size, mass and/or luminosity (especially of object labeled "ultra-luminous," "super-massive," etc.), one might be inclined to wonder whether "dark matter" is even necessary? But, I've probably wandered a bit too far afield, eh?
~Michael - starmanjones, on 05/21/2008, -0/+1admittedly.... i'm feeling froggy. but this is not the missing matter that we created dark matter to account for. this is between galaxies. it doesn't help hold the galaxies together. so we have newly discovered regular matter that we didn't know we were missing. it doesn't offset the amount of dark matter in the galaxies. that mass is still missing and accounted for using dark matter. ok... i'm being difficult. but it just caused me laughter that wasn't accounted for in the standard model... its not dark laughter its more light laughter like in nitrous oxide or something...
sorry. - mgmirkin, on 05/21/2008, -0/+1The webs of plasma are beginning to reveal themselves! Soon, they won't be able to hide any longer...
See also:
(Piece of Missing Cosmic Matter Found)
http://digg.com/space/Piece_of_Missing_Cosmic_Matt ...
(Space oddity: European probe finds missing matter)
http://digg.com/space/Space_oddity_European_probe_ ...
(Galaxies formed along filaments like beads on a string!)
http://digg.com/space/Galaxies_formed_along_filame ...
(Cosmic Finger Taps Our Galaxy's Shoulder)
http://digg.com/space/Cosmic_Finger_Taps_Our_Galax ...
(NASA Spacecraft Make New Discoveries About Northern Lights)
http://digg.com/space/NASA_Spacecraft_Make_New_Dis ...
----------
(The Universe in Hot Gas)
http://antwrp.gsfc.nasa.gov/apod/ap020820.html
(The Lyman Alpha Forest)
http://antwrp.gsfc.nasa.gov/apod/ap030126.html
(Two Million Galaxies)
http://antwrp.gsfc.nasa.gov/apod/ap030611.html
~Michael
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