[Ernest_at_the_Beach]

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[Aracelis]

Ping

[swilhelm73]

Interesting. I do wonder where anti-dark matter would be coming from though.

We know that matter was created in a slightly larger amount then anti-matter, leading to the destruction of pretty much all of the latter.

So, is the supposition that dark matter is somehow fundamentally different in this regard?

[Constitution Day]

[onedoug]

Why should dark matter be so exotic as to not be all around us?

[G L Tirebiter]

Anyone from Whatsamatta U. working on this?

[TADSLOS]

However, because dark matter "feels" gravity like ordinary visible matter, it is a fair bet that it clumps in the centre of our galaxy.

This statement is another example of the institutional racism found in the scientific community /sarc/

[pankot]

Is it God @ the center of the Universe? Hebrews 1:3

[Physicist]

Here's my observation. Supposedly the annihilation of these dark matter particles produces electron-positron pairs. Since we know the approximate density of dark matter, and since we measure the rate at which the e+e- annihilation radiation is being produced, we can calculate the coupling constant for interactions between electrons and dark matter.

CPT invariance tells us that this process will also work in reverse, with the same coupling strength. We should be able to produce dark matter pairs at some calculable rate using an electron-positron collider. If the mass of the dark matter particles is around 100 MeV, we must have been producing them for quite some time: we have plenty of accelerators that can reach that energy.

If the dark matter particles don't couple to the electroweak force, the events may not distort the LEP neutrino-counting result (which measures the Z-resonance width), but they WILL throw off the "ASP" neutrino signature (single photon, missing transverse momentum).

I have performed this experiment myself, and only ever saw what was expected for three neutrino species. Is the lack of any anomalous measured signal (VERY well measured at such low masses) consistent with the coupling constant they require? Presumably that's mentioned in their paper. Until I see that, I suspend judgment.

[sandydipper]

Damn! Just when I finally grasp Archiemiedes explanation of 3.14 to a circle's diameter - you throw in THIS!

[adam_az]

That's not dark matter... That's V'GER!

[JoJo Gunn]

Breakthrough, my cakes!

I could've saved all those eggheads years of trouble, by telling them where to look. All Dark matter resides between the ears of Democraps.

[qam1]

Dark Matter is to the 20th and 21st century what Ether was to the 16th and 17th.

[el_texicano]

Humph!!! I saw the mention in the title of "Dark Matter" and figured this had to be an article about the inner-cranial matter of a DemocRATS/liberals head.

[DannyTN]

Facinating, thanks for the post. Yet on the first reading I'm confused: Is dark matter light or just not heavy? And if it's light is that like a black light? And if it's not heavy, then there is a lot of it, then is it really dark or is it transparent?

It left me a little light headed and in the dark.

[baseballfanjm]

Could someone fill me in as to what dark matter is?

[Fledermaus]

Thanks for the article. I always thought "dark matter" was that stuff between liberals ears.

[boris]

WHO'LL STOP THE RAIN (J.C. Fogerty)

Long as I remember The rain been comin' down.
Clouds of myst'ry pourin' Confusion on the ground.
Good men through the ages, Tryin' to find the sun;
And I wonder, Still I wonder, Who'll stop the rain.

I went down Virginia, Seekin' shelter from the storm.
Caught up in the fable, I watched the tower grow.
Five year plans and new deals, Wrapped in golden chains.
And I wonder, Still I wonder Who'll stop the rain.

Heard the singers playin', How we cheered for more.
The crowd had rushed together, Tryin' to keep warm.
Still the rain kept pourin', Fallin' on my ears.
And I wonder, Still I wonder Who'll stop the rain.

[PBRSTREETGANG]

Astronomers claim dark matter breakthrough

That sounds vaguely racial. Wesley Clark, Howard Dean and Al Sharpton should be beginning protests calling for the firing of astronomers any minute now.

[Southack]

There is no dark matter. Dark matter is a mere intellectual tool for mentally resolving why Newton's gravitational equations don't completely explain distant behavior.