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pleco
SFN Addict
USA
2998 Posts |
 Posted - 08/22/2006 : 12:43:52
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Link
quote:
A team of U.S. scientists has found the first direct evidence of the existence of "dark matter," a little-understood substance with a huge influence on gravity, the team's leader said on Tuesday.
Using orbiting telescopes, the researchers watched two giant gas clouds in outer space collide over a 100-hour period. As the clouds clashed, they said, the visible gas particles slowed, pulling away from the invisible dark matter particles.
The researchers said they could detect the dark matter particles by their gravitational pull on the surrounding visible particles.
"This is the first time we've been able to show that (dark matter) has to be out there, that you can't explain it away," Clowe told Reuters. "We haven't actually been able to see the dark matter particles themselves, but what we have been able to do is ... image the gravity that they're generating."
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by Filthy
The neo-con methane machine will soon be running at full fart. |
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Edited by - pleco on 10/03/2006 05:09:19
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furshur
SFN Regular
USA
1536 Posts |
Posted - 08/22/2006 : 12:58:02 [Permalink]
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Here is another link to the story. It was actually 2 massive glactic clusters that interacted with each other.
[Link fixed. Dr. Mabuse] |
If I knew then what I know now then I would know more now than I know. |
| Edited by - Dr. Mabuse on 08/23/2006 14:41:50 |
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beskeptigal
SFN Die Hard
USA
3834 Posts |
Posted - 08/22/2006 : 20:43:48 [Permalink]
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| "Page not found", furshur. |
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beskeptigal
SFN Die Hard
USA
3834 Posts |
Posted - 08/22/2006 : 20:50:02 [Permalink]
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| Here is the Astrophysical Journal site which is due to publish the latest Dark Matter paper. Give it a few more days and maybe we can read the original article. I tried linking to a search for dark matter there but it linked to the search site instead. |
| Edited by - beskeptigal on 08/22/2006 20:54:45 |
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furshur
SFN Regular
USA
1536 Posts |
Posted - 08/23/2006 : 07:13:21 [Permalink]
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quote:
"Page not found", furshur.
Damn Nature - they make it very challenging to post links.
If you go to nature.com and in the search box enter "galaxy collision" the article in question will show up on the first page of hits.
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If I knew then what I know now then I would know more now than I know. |
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Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 08/23/2006 : 14:43:16 [Permalink]
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quote:
Originally posted by furshur
quote:
"Page not found", furshur.
Damn Nature - they make it very challenging to post links.
If you go to nature.com and in the search box enter "galaxy collision" the article in question will show up on the first page of hits.
No worries, furshur. I fixed it. |
Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
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beskeptigal
SFN Die Hard
USA
3834 Posts |
Posted - 08/23/2006 : 21:35:56 [Permalink]
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I like the no commitment phrases, "Dark matter might be the cause."
Clearly there is gravity suggesting matter and it doesn't interact with light suggesting dark. Either the laws of gravity are wrong or it's dark matter.
Is there another choice I'm missing here? |
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tomk80
SFN Regular
Netherlands
1278 Posts |
Posted - 08/24/2006 : 04:56:49 [Permalink]
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| Some other process that is unknown or couldn't be measured. |
Tom
`Contrariwise,' continued Tweedledee, `if it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic.'
-Through the Looking Glass by Lewis Caroll- |
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Dave W.
Info Junkie
USA
26022 Posts |
Posted - 08/24/2006 : 05:21:34 [Permalink]
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quote:
Originally posted by beskeptigal
I like the no commitment phrases, "Dark matter might be the cause."
No scientist is going to commit to a position until there exist decades of reliable data. |
- Dave W. (Private Msg, EMail)
Evidently, I rock!
Why not question something for a change?
Visit Dave's Psoriasis Info, too. |
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BigPapaSmurf
SFN Die Hard
3192 Posts |
Posted - 08/24/2006 : 07:46:16 [Permalink]
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| I think its just antilight and since we have no antiphoton detectors we just cant see it. |
"...things I have neither seen nor experienced nor heard tell of from anybody else; things, what is more, that do not in fact exist and could not ever exist at all. So my readers must not believe a word I say." -Lucian on his book True History
"...They accept such things on faith alone, without any evidence. So if a fraudulent and cunning person who knows how to take advantage of a situation comes among them, he can make himself rich in a short time." -Lucian critical of early Christians c.166 AD From his book, De Morte Peregrini |
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HalfMooner
Dingaling
Philippines
15831 Posts |
Posted - 08/24/2006 : 11:12:49 [Permalink]
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quote:
Originally posted by BigPapaSmurf
I think its just antilight and since we have no antiphoton detectors we just cant see it.
But we could use our perfectly good photon antidetectors.
By the way, what's likely to be the nature of dark matter? There seems to be plenty of it, much more than all the normal matter in the universe. Is it likely to be found in our solar system, perhaps in planetary cores, or in the sun? (Did I bring up the sun? Sorry!) Could there be tiny but earth-like extrasolar planets which hold an atmosphere because their dark matter cores give them sufficient mass?
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“Biology is just physics that has begun to smell bad.” —HalfMooner
Here's a link to Moonscape News, and one to its Archive. |
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sublime
New Member
USA
1 Post |
Posted - 10/02/2006 : 21:05:23 [Permalink]
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| I do not believe it can exist in planetary cores, becasue it is used to explain why solar systems on the outide of galaxies are not at traveling at the right speed according to the current gravitational laws. |
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Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 10/02/2006 : 21:26:49 [Permalink]
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Welcome to Skeptic Friends Network, sublime!
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Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
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Starman
SFN Regular
Sweden
1613 Posts |
Posted - 10/02/2006 : 23:25:02 [Permalink]
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quote:
Originally posted by Dr. Mabuse
No worries, furshur. I fixed it.
Please fix plecos link to!
Its too long for my little screen.
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pleco
SFN Addict
USA
2998 Posts |
Posted - 10/03/2006 : 05:09:41 [Permalink]
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quote:
Originally posted by Starman
quote:
Originally posted by Dr. Mabuse
No worries, furshur. I fixed it.
Please fix plecos link to!
Its too long for my little screen.
Fixed.  |
by Filthy
The neo-con methane machine will soon be running at full fart. |
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Vegeta
Skeptic Friend
United Kingdom
238 Posts |
Posted - 10/30/2006 : 04:46:59 [Permalink]
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| i think calling it dark matter is offensive. light inhibited matter is more PC |
What are you looking at? Haven't you ever seen a pink shirt before?
"I was asked if I would do a similar sketch but focusing on the shortcomings of Islam rather than Christianity. I said, 'No, no I wouldn't. I may be an atheist but I'm not stupid.'" - Steward Lee |
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