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Dark Matter May Collide With Atoms Inside You More Often Than Thought
SPACE.com ^ | 4/27/12 | Charles Q. Choi

Posted on 04/27/2012 4:12:19 PM PDT by NormsRevenge

Invisible dark matter particles may regularly pass through our bodies, and dozens to thousands of these particles may be colliding with atoms inside us every year, according to a new calculation.

However, radiation from these impacts is unlikely to cause cancer, investigators added.

Dark matter is one of the greatest scientific mysteries of our time — an invisible substance thought to make up five-sixths of all matter in the universe. Scientists think it might be composed of things called weakly interacting massive particles, or WIMPs, that interact normally with gravity but very weakly with all the other known forces of the universe.

Its ghostly nature makes it exceedingly difficult to directly prove whether dark matter really exists or what its properties really are. Dark matter is largely thought to be intangible, its presence detectable only via the gravitational pull it exerts.

Still, although dark matter particles are thought to interact only very rarely with normal matter, Earth and everything on it should be hurtling through a dense sea of dark matter, with billions of these particles rushing through us every second. Though the large majority of these particles would pass straight through us without hitting any of the atoms that make up our bodies, a few collisions would be likely. And the aftermath of such impacts could shed light on dark matter's nature. [Gallery: Dark Matter Throughout the Universe]

Scientists calculated how many times dark matter particles ought to collide with atomic nuclei in adult-size bodies — lumps of flesh about 154 pounds (70 kilograms) in mass largely composed of carbon, hydrogen, oxygen and nitrogen.

Dark matter should most often collide with the hydrogen and oxygen nuclei in the body — the former makes up 60 percent of the atoms in the body, while the latter makes up about 60 percent of the mass of the body. Given the most common assumptions regarding what dark matter is, roughly 35 impacts between dark matter particles and atoms in your body should happen annually.

However, if the latest models are correct and dark matter interactions are more common than previously thought, there might be about 100,000 collisions annually for each human on the planet.


TOPICS: Astronomy; Chit/Chat; Science; Weird Stuff
KEYWORDS: atoms; darkmatter; thought
Ya know how ya get that funny 'otherworldly' aftertaste sometimes? unless yur well GERDdified.

a possible explanation for spontaneous human combustion, maybe where folks go sometimes.. pooof.

next thing yaknow yur in another dimension or institution

1 posted on 04/27/2012 4:12:23 PM PDT by NormsRevenge
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The supposed distribution of dark matter throughout the Universe

NASA/UNC
2 posted on 04/27/2012 4:15:32 PM PDT by NormsRevenge (Semper Fi)
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To: NormsRevenge

“dark matter” is one of the biggest joke/frauds played on the rest of the grant suckers.


3 posted on 04/27/2012 4:19:51 PM PDT by allmost
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To: NormsRevenge

IF dark matter is intangible, but reacts to gravity, shouldn;t it be sinking down and accumulating in the aarths core? And wouldn’t that add to the planet’s mass and gravity over time? Anybody know?


4 posted on 04/27/2012 4:20:48 PM PDT by Hugin ("Most time a man'll tell you his bad intentions if you listen and let yourself hear"--Open Range)
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To: NormsRevenge

"...I've been known to pass dark matter if fed clams and raspberries....the collision part comes if the door isn't open"

5 posted on 04/27/2012 4:22:27 PM PDT by Doogle (((USAF.68-73..8th TFW Ubon Thailand..never store a threat you should have eliminated)))
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To: allmost

I am not sure I would call it a fraud. I predict that ultimately the scientists will say that there is no dark matter, and that their previous belief that dark matter exists was the result of a misunderstanding of the basic laws of physics. However, so far no one has put up dark matter as an excuse to spend trillions of dollars re-engineering society. That’s global warming.


6 posted on 04/27/2012 4:22:27 PM PDT by Brilliant
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To: Brilliant
The theoretical ‘wimp’s’ and egregious miscalculations concerning galactic gravitation lead these people to create something that does not exist. I love facts. I cannot trust a damn thing now. Look at what is right in front of you imo.
7 posted on 04/27/2012 4:29:10 PM PDT by allmost
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To: Hugin

You make a good point, why wouldn’t dark matter form it’s own stars and solar systems? There is certainly a tendency for normal matter to clump up and form huge clumps.

However, as to your first question. If dark matter only interacts gravitationally, then, if was not originally graviationally bound to the earth, it would gain enough kinetic energy as it fell towards (or even through!) the earth to have escape velocity from the earth as it passes through it and out the other side! The interaction of the two bodies (earth and dark matter) might deflect them, but there would be not net exchange of energy.


8 posted on 04/27/2012 4:30:19 PM PDT by Lonesome in Massachussets (Queeg Olbermann: Ahh, but the strawberries that's... that's where I had them.)
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To: NormsRevenge

Hmm, so would you receive more than the “average”, by say, living under or near power lines?


9 posted on 04/27/2012 4:31:50 PM PDT by treetopsandroofs (Had FDR been GOP, there would have been no World Wars, just "The Great War" and "Roosevelt's Wars".)
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To: NormsRevenge

A dark matter named Obama collides with my logic everyday.


10 posted on 04/27/2012 4:33:48 PM PDT by GrandJediMasterYoda (From the dough tree we get donuts.)
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To: treetopsandroofs
Dark matter will kill us all, the only shelter comes from the government. They love you you'll see. You are but children of the State. They get paid to spout out dark matter bs. Your tax Dollars are taken to pay them.
11 posted on 04/27/2012 4:37:13 PM PDT by allmost
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To: allmost

If you changed either the special theory or the general theory just slightly, dark matter would disappear completely, I suspect. Actually, you would probably need to change both because they dovetail with each other.

In particular, I note that the evidence for dark matter and dark energy are contradictory. On a galactic scale, it seems that there is too much gravity to be explained by the visible matter, so they hypothesize dark matter. But on the universal scale, it seems that the expansion of the universe is too fast, given how weak gravity is, to be explained without dark energy. So on one hand, gravity is too weak to explain reality. On the other hand, it’s too strong. In my opinion, that shows that it tapers off at a rate that is greater than what we believe.


12 posted on 04/27/2012 4:39:04 PM PDT by Brilliant
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To: Quix

Do you think “dark matter” is Satan ?


13 posted on 04/27/2012 4:39:20 PM PDT by fieldmarshaldj (If you like lying Socialist dirtbags, you'll love Slick Willard)
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To: Brilliant
The energy that manipulates in an exogalactic base is sometimes called ‘quantum foam’.Einstein may have been an approximation. It is possible.
14 posted on 04/27/2012 4:44:15 PM PDT by allmost
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To: Brilliant
I am not sure I would call it a fraud. I predict that ultimately the scientists will say that there is no dark matter, and that their previous belief that dark matter exists was the result of a misunderstanding of the basic laws of physics.

Sounds like you understand the concept of theory.

I also have problems with the idea of dark matter. Personally I think it might be a form of energy that we don't understand.
15 posted on 04/27/2012 4:46:15 PM PDT by cripplecreek (What does it profit a man if he gains the whole world but loses his soul?)
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To: allmost

Did you ever see that old Calvin and Hobbes cartoon where Calvin makes fun of it? “Why do they call it dark matter? Because it’s dark? Duh! That’s the best name they could come up with? A duh!”


16 posted on 04/27/2012 4:47:38 PM PDT by GrandJediMasterYoda (From the dough tree we get donuts.)
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To: NormsRevenge

I released some dark matter this morning.


17 posted on 04/27/2012 4:49:05 PM PDT by beethovenfan (If Islam is the solution, the "problem" must be freedom.)
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To: NormsRevenge

Roughage will help pass that dark matter on out.


18 posted on 04/27/2012 5:03:50 PM PDT by bgill
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To: NormsRevenge

Fortunately, I pass most of it.


19 posted on 04/27/2012 5:04:09 PM PDT by Sacajaweau
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To: NormsRevenge

“Dark matter should most often collide with the hydrogen and oxygen nuclei in the body — the former makes up 60 percent of the atoms in the body, while the latter makes up about 60 percent of the mass of the body. Given the most common assumptions regarding what dark matter is, roughly 35 impacts between dark matter particles and atoms in your body should happen annually.”

Well, there’s a testable hypothesis—so long as the impacts are measurable.


20 posted on 04/27/2012 5:06:54 PM PDT by ModelBreaker
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To: NormsRevenge
Invisible dark matter particles may regularly pass through our bodies, and dozens to thousands of these particles may be colliding with atoms inside us every year, according to a new calculation.

***********

I thought I just needed some TUMS....

Pardon me...

21 posted on 04/27/2012 5:16:46 PM PDT by Wings-n-Wind (The main things are the plain things!)
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To: NormsRevenge
or maybe not
22 posted on 04/27/2012 5:36:27 PM PDT by Vroomfondel
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To: GrandJediMasterYoda

He is definitely a WIMP — Weakly Interacting Man-child President


23 posted on 04/27/2012 5:44:07 PM PDT by mikrofon ("Dark Matter for Obama 2012")
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To: Lonesome in Massachussets

Dark matter from what I understand acts as an anti-gravitional force, causing matter to push apart rather than accumulate as in the case of gravity, which would explain why it doesn’t accumulate and form dark matter galaxies and so forth.

Scientists theorized it as an explanation for why the universe appears to be ramping up its expansion instead of collapsing back in on itself.


24 posted on 04/27/2012 5:48:43 PM PDT by sadponies
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To: sadponies; Lonesome in Massachussets

Ehh.. scratch that. That was dark energy, not dark matter. I keep getting the two mixed up.


25 posted on 04/27/2012 5:56:42 PM PDT by sadponies
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To: fieldmarshaldj

Interesting question.

No. I don’t.

I do not think satan is that pervasive in the least.

There’s the Scripture about people looking on the measley personage who was satan and being shocked that such a puny bloke could do so much damage.

His major power is getting people to believe his lies.

And there’s the Scripture about God hiding Himself in darkness—a real mystery that one.

I suspect that dark matter will turn out to have been one of those things God threw in to mystify mortals so we didn’t figure out too much too quickly.

But that’s likely amiss, too.

Thx for the honor of your question.


26 posted on 04/27/2012 6:01:23 PM PDT by Quix (Times are a changin' INSURE you have believed in your heart & confessed Jesus as Lord Come NtheFlesh)
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To: Brilliant

I recently heard on the John Batchelor show that an experiment to detect dark matter on a galactic scale failed to do so. It may well be that dark matter does not exist and we don’t fully understand physics yet.


27 posted on 04/27/2012 6:16:18 PM PDT by LiveFree99
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To: Doogle
Image Hosted by ImageShack.us

Note the look of satisfaction on nibbler's face.

Photobucket

Any questions?
28 posted on 04/27/2012 6:18:50 PM PDT by cripplecreek (What does it profit a man if he gains the whole world but loses his soul?)
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To: NormsRevenge

things called weakly interacting massive particles

Further identified as Helen Thomas and Rosie O'Donnell


29 posted on 04/27/2012 6:25:50 PM PDT by MindBender26 (New Army SF and Ranger Slogan: Vengeance is Mine, sayeth the Lord.... but He subcontracts!)
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To: NormsRevenge

I quite frankly am annoyed at how physicists (and worse, science journalists) natter on about “dark matter” as if they were certain it exists. It is a hypothesis proposed to explain differences between observations of the universe on a large scale and what our current understanding of gravity (general relativity) would predict. It is quite possible the differences are entirely explained by quantum corrections to general relativity (which the same physicists also expect, but can’t calculate for lack of a completely viable theory of quantum gravity).


30 posted on 04/27/2012 6:27:28 PM PDT by The_Reader_David (And when they behead your own people in the wars which are to come, then you will know. . .)
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To: Quix

Thanks for the response. :-)


31 posted on 04/27/2012 6:29:31 PM PDT by fieldmarshaldj (If you like lying Socialist dirtbags, you'll love Slick Willard)
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To: allmost

If dark matter existed you’d be shoveling it off your driveway in June.


32 posted on 04/27/2012 6:32:18 PM PDT by Lurker (The avalanche has begun. The pebbles no longer have a vote.)
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To: NormsRevenge

I don’t see the problem. Executive order banning dark matter. The prince has already banned gray matter from his administration.


33 posted on 04/27/2012 6:36:10 PM PDT by jwalsh07 (.)
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To: Hugin

Not quite. If the current concept of dark matter is correct than it would be able to pass clean through regular matter (for the most part). In which case a particle of dark matter on a collision course with the earth would start out (before impact) traveling at some speed greater than the planet’s escape velocity. The dark matter would be influenced by earth’s gravity, likely being deflected into a new trajectory. But it won’t crash onto the surface like regular matter would and so will not lose its energy, so it just keeps going, traveling though the earth’s interior and emerging from the other side still traveling faster than escape velocity.

I hope that was clear.


34 posted on 04/27/2012 6:42:38 PM PDT by eclecticEel (Life, Liberty, and the Pursuit of Happiness: 7/4/1776 - 3/21/2010)
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To: The_Reader_David

In their defense there is usually a reporter between the scientist and us, and they could screw up the the spelling of their own names.


35 posted on 04/27/2012 7:12:06 PM PDT by DManA
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To: NormsRevenge

Dark matter is accelerating the expansion of the Universe.
If gunslinger Roland Deschain doesn’t reach the Dark Tower and defeat the Crimson King, preventing him from completing his destruction of the Beams that pierce the Dark Matter and hold everything together, well—screw the Mayans: we’re all `dead meat’ by Memorial Day. Go Ro!
Don’t mean to get you all worked up or anything, but it is what it is.


36 posted on 04/27/2012 7:32:26 PM PDT by tumblindice (Our new, happy lives.)
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To: Brilliant
On a galactic scale, it seems that there is too much gravity to be explained by the visible matter

Scientists tell us that the universe is expanding. Well, not only expanding but increasing the rate of expansion. It's expanding faster (accelerating).

Theory goes that when mass accelerates towards the speed of light, gravity increases and the material gets more massive, requiring ever increasing amounts of energy to accelerate less and less.

No one has calculated this energy investment.

37 posted on 04/27/2012 9:31:42 PM PDT by Zuben Elgenubi
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To: NormsRevenge
A question. Why is the universe as represented in the diagram of the distribution of dark matter a cuboid?. I always thought that something expanding from a point source in 3 dimensional space would be a spheroid.
38 posted on 04/28/2012 1:50:45 AM PDT by ADemocratNoMore (Jeepers, Freepers, where'd 'ya get those sleepers?. Pj people, exposing old media's lies.)
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