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Is Earth AGAIN The Center of TheUniverse?

September 3, 2009 8:13:40 PM PDT · bySeekAndFind · 44 replies · 977+ viewsChristian Post ^ | 9/3/2009 | Allen J.Epling

I came across a news item in the USAToday website, dated August 18, thatgot my attention. It concerns "DarkEnergy", the mysterious force thatseems to be speeding up the expansion

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of the universe, that no one can find orexplain. Two scientists say is doesn'texist now because of a "mathematicalsolution they have produced, thatsuggests it is a natural result of theBig Bang. Part of the article isreproduced here. "What's the answer?It doesn't exist, suggestmathematicians Blake Temple andJoel Smoller, in a study releasedMonday by the Proceedings of theNational...

The day the universe froze; New darkenergy model includes cosmologicalphase transition

May 8, 2009 1:40:50 PM PDT · by MikeFieschko · 19 replies · 424+ viewseuarekalert.org ^ | May 8, 2009 | DavidF. Salisbury [?]

Imagine a time when the entireuniverse froze. According to a newmodel for dark energy, that isessentially what happened about 11.5billion years ago, when the universewas a quarter of the size it is today.The model, published online May 6 inthe journal Physical Review D, was

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developed by Research AssociateSourish Dutta and Professor ofPhysics Robert Scherrer at VanderbiltUniversity, working with Professor ofPhysics Stephen Hsu and graduatestudent David Reeb at the Universityof Oregon. A cosmological phasetransition -- similar to freezing -- isone of the distinctive aspects of this...

Study plunges standard theory ofcosmology into crisis

May 5, 2009 7:17:29 AM PDT · bydecimon · 32 replies · 760+ viewshttp://www.eurekalert.org/pub_releases/2009-05/uob-sps050509.php ^ | May 5, 2009 |Unknown

As modern cosmologists rely moreand more on the ominous "darkmatter" to explain otherwiseinexplicable observations, much efforthas gone into the detection of thismysterious substance in the last twodecades, yet no direct proof could befound that it actually exists. Even if itdoes exist, dark matter would beunable to reconcile all the currentdiscrepancies between actual

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measurements and predictions basedon theoretical models. Hence thenumber of physicists questioning theexistence of dark matter has beenincreasing for some time now.Competing theories of gravitationhave already been developed whichare independent of this...

Does Dark Energy Really Exist?: Ordoes Earth occupy a very unusualplace in the universe? (LOL!)

March 29, 2009 6:32:33 PM PDT · byGodGunsGuts · 74 replies · 2,405+ viewsScientific American ^ | March 2009 |Timothy Clifton and Pedro G. Ferreira

Does Dark Energy Really Exist? Ordoes Earth occupy a very unusualplace in the universe? ScientificAmerican, March 2009 By TimothyClifton and Pedro G. Ferreira ... Mostof us are very familiar with the ideathat our planet is nothing more than atiny speck orbiting a typical star,somewhere near the edge of anotherwise unnoteworthy galaxy. In themidst of a universe populated bybillions of galaxies that stretch out to

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our cosmic horizon, we are led tobelieve that there is nothing special orunique about our location. But what isthe evidence for this...

New Data Suggests We Don’t Live in aVoid, and Supports Dark Energy

February 3, 2009 8:26:34 AM PST · byErnest_at_the_Beach · 22 replies · 487+viewsphysorg.com ^ | January 28th, 2009 | LisaZyga

Temperature fluctuations in thecosmic microwave background,among other data, are helpingresearchers better understand theaccelerating expansion of theuniverse. Image credit: NASA.(PhysOrg.com) -- An alternativeproposal to dark energy in which theEarth sits near the center of a largevoid is undergoing scrutiny, and theresults show that void models fitpoorly with observed data.Nevertheless, scientists say that moreresearch will be needed to determineif void models, dark energy, orsomething else can accurately explain

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how the universe is expanding at anaccelerating rate. Almost a decadeago, theorists proposed a void modelas...

Astronomers Aim to GraspMysterious Dark Matter (In search ofWIMPs)

December 29, 2008 2:46:01 PM PST · byNormsRevenge · 6 replies · 408+ viewsSpace.com on Yahoo ^ | 12/29/08 | ClaraMoskowitz

For the past quarter century, darkmatter has been a mystery we've justhad to live with. But the time may begetting close when science can finallyunveil what this befuddling stuff isthat makes up most of the matter inthe universe. Dark matter can't beseen. Nobody even knows what it is.But it must be there, because withoutit galaxies would fly apart. Upcomingexperiments on Earth such as theLarge Hadron Collider (LHC) particleaccelerator in Switzerland, and a newspacecraft called Gaia set to launch in2011, could be the key to closing the...

Tsunami invisibility cloak, dark

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energy v. the void, sorting nanotubeswith light, and more

September 26, 2008 4:30:39 AM PDT · bydecimon · 12 replies · 432+ viewsAmerican Physical Society ^ | Sep 26,2008 | Unknown

Tsunami invisibility cloak, darkenergy v. the void, sorting nanotubeswith light, and moreNews from theAmerican Physical SocietyTsunamiInvisibility Cloak M. Farhat, S.Enoch, S. Guenneau and A.B.Movchan Physical Review Letters(forthcoming) Rather than buildingstronger ocean-based structures towithstand tsunamis, it might be easierto simply make the structuresdisappear. A collaboration ofphysicists from the Centre National dela Recherche Scientifique (CNRS) andAix-Marseille Universite in Franceand the University of Liverpool inEngland have conducted laboratoryexperiments showing that it's possibleto make type of dike that acts as aninvisibility cloak that hides off-shore...

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Do We Live in a Giant CosmicBubble?

September 30, 2008 3:23:48 PM PDT · bydecimon · 35 replies · 683+ viewsSPACE.com ^ | Sep 30, 2008 | ClaraMoskowitz

If the notion of dark energy soundsimprobable, get ready for an evenmore outlandish suggestion. Earthmay be trapped in an abnormal bubbleof space-time that is particularly voidof matter. Scientists say this conditioncould account for the apparentacceleration of the universe'sexpansion, for which dark energycurrently is the leading explanation.

Mysterious Dark Matter MightActually Glow

November 7, 2008 3:21:52 PM PST · bySunkenCiv · 9 replies · 553+ viewsSPACE.com ^ | Thursday, November 6,2008 | Staff

Nobody knows what dark matter is,but scientists may now have a cluewhere to look for it. The strange stuffmakes up about 85 percent of the heftof the universe. It's invisible, but

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researchers know it's there becausethere is not enough regular matter --stars and planets and gas and dust --to hold galaxies and galaxy clusterstogether. Some other unseen material,dubbed dark matter, must be gluingthings together... A new computersimulation of the evolution of agalaxy like our Milky Way suggests itmight be possible to observe high-energy gamma-rays given off by...

Galaxy Surprise Sheds Light on DarkMatter

November 7, 2008 4:48:38 PM PST · bySunkenCiv · 16 replies · 599+ viewsSpace.com ^ | August 27, 2008 | ClaraMoskowitz

A study of small galaxies circlingaround the Milky Way found thatwhile they range dramatically inbrightness, they all surprisingly packabout the same mass. The worksuggests there is a minimum size forgalaxies, and it could shed light onmysterious dark matter. Spinningaround the Milky Way are at least 23pint-sized galaxies, each shining with

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the light of anywhere from a thousandto a billion suns. Though each of thesegalaxies is very dim compared to largegalaxies like our own, they span alarge range in brightness. Astronomersled by Louis Strigari of theUniversity...

Unknown "Structures" Tugging atUniverse, Study Says [ Dark Flow ]

November 7, 2008 3:29:16 PM PST · bySunkenCiv · 73 replies · 1,751+ viewsNational Geographic News ^ | November5, 2008 | John Roach

Everything in the known universe issaid to be racing toward the massiveclumps of matter at more than 2million miles (3.2 million kilometers)an hour -- a movement the researchershave dubbed dark flow. The presenceof the extra-universal matter suggeststhat our universe is part of somethingbigger -- a multiverse -- and thatwhatever is out there is very differentfrom the universe we know, accordingto study leader Alexander Kashlinsky,an astrophysicist at NASA's GoddardSpace Flight Center in Maryland...

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Dark flow was named in a nod to darkenergy and dark matter -- two...

Mysterious New 'Dark Flow'Discovered in Space

September 25, 2008 8:58:58 AM PDT · bynobama08 · 18 replies · 675+ viewsfoxnews.com ^ | Thursday, September 25,2008 | Clara Moskowitz

As if the mysteries of dark matter anddark energy weren't vexing enough,another baffling cosmic puzzle hasbeen discovered. Patches of matter inthe universe seem to be moving atvery high speeds and in a uniformdirection that can't be explained byany of the known gravitational forcesin the observable universe.Astronomers are calling thephenomenon "dark flow." The stuffthat's pulling this matter must beoutside the observable universe,researchers conclude.

Mysterious New 'Dark Flow'Discovered in Space

September 23, 2008 4:46:02 PM PDT · byNormsRevenge · 37 replies · 176+ views

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Space.com on Yahoo ^ | 9/23/08 | ClaraMoskowitz

As if the mysteries of dark matter anddark energy weren't vexing enough,another baffling cosmic puzzle hasbeen discovered. Patches of matter inthe universe seem to be moving atvery high speeds and in a uniformdirection that can't be explained byany of the known gravitational forcesin the observable universe.Astronomers are calling thephenomenon "dark flow." The stuffthat's pulling this matter must beoutside the observable universe,researchers conclude. When scientiststalk about the observable universe,they don't just mean as far out as theeye, or even the most powerfultelescope, can see....

Monster galactic cluster seen in deepUniverse: European agency

August 25, 2008 3:56:31 PM PDT · byNormsRevenge · 15 replies · 174+ viewsAFP on Yahoo ^ | 8/25/08 | AFP

PARIS (AFP) – An orbitingobservatory has spotted a massive

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cluster of galaxies in deep space thatcan only be explained by the exoticphenomenon known as dark energy,the European Space Agency (ESA)said on Monday. Spotted in a scan byESA's orbiting X-ray telescopeXMM-Newton, the cluster's mass isabout 1,000 times that of our owngalaxy, the Milky Way, it said. Thehuge cluster, known by its cataloguenumber of 2XMM J083026+524133,lies 7.7 billion light years from Earthand helps confirm the existence ofdark energy, the agency said. Underthis hypothesis, most of theUniverse...

Dark, Perhaps Forever (Is the theoryof everything unattainable?)

June 4, 2008 11:07:19 AM PDT · byLibWhacker · 88 replies · 131+ viewsNew York Times ^ | 6/3/08 | DennisOverbye

BALTIMORE — Mario Livio tossedhis car keys in the air. They rose evermore slowly, paused, shining, at thetop of their arc, and then inaccordance with everything our

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Galilean ape brains have ever learnedto expect, crashed back down into hishand. That was the whole problem,explained Dr. Livio, a theorist at theSpace Telescope Science Institutehere on the Johns Hopkins campus. Adecade ago, astronomers discoveredthat what is true for your car keys isnot true for the galaxies. Having beenimpelled apart by the force of the BigBang, the galaxies, in...

A Test of the Copernican Principle(the principle has never beenconfirmed)

May 22, 2008 5:05:41 PM PDT · byLibWhacker · 6 replies · 142+ viewsPhysOrg ^ | 5/22/08 | Lisa Zyga

The Copernican principle states thatthe Earth is not the center of theuniverse, and that, as observers, wedon’t occupy a special place. Firststated by Copernicus in the 16thcentury, today the idea is whollyaccepted by scientists, and is anassumed concept in manyastronomical theories.However, asphysicists Robert Caldwell of

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Dartmouth College in Hanover, NewHampshire, and Albert Stebbins ofFermilab in Batavia, Illinois, pointout, the Copernican principle hasnever been confirmed as a whole. In arecent paper published in PhysicalReview Letters called “A Test of theCopernican Principle,” the tworesearchers...

Physicists Renew Claim, in NewExperiment, of Detecting Dark MatterParticles

April 17, 2008 11:38:51 PM PDT · byneverdem · 9 replies · 68+ viewsNY Times ^ | April 17, 2008 | DENNISOVERBYE

A team of Italian and Chinesephysicists on Wednesday renewed acontroversial claim that they haddetected the mysterious dark matterparticles that astronomers say swaddlethe galaxies in halos and direct theevolution of the universe. The team,called Dama, from “DArk MAtter,”and led by Rita Bernabei of theUniversity of Rome, has maintainedsince 2000 that a yearly modulation in

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the rate of flashes in a detector nearlya mile underneath the Gran Sassomountain in Italy is the result of theEarth’s passage through a “wind” ofdark matter particles as it goes aroundthe Sun....

"Dark Energy" Dominates TheUniverse

January 3, 2003 6:35:40 AM PST · byforsnax5 · 46 replies · 306+ viewsDartmouth College ^ | January 2, 2003 |Brian Chaboyer, Lawrence Krauss

DARK ENERGY DOMINATES THEUNIVERSE HANOVER, NH - ADartmouth researcher is building acase for a "dark energy"-dominateduniverse. Dark energy, the mysteriousenergy with unusual anti-gravitationalproperties, has been the subject ofgreat debate among cosmologists.Brian Chaboyer, Assistant Professorof Physics and Astronomy atDartmouth, with his collaboratorLawrence Krauss, Professor ofPhysics and Astronomy at CaseWestern Reserve University, havereported their finding in the January 3,

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2003, issue of Science. Combiningtheir calculations of the ages of theoldest stars with measurements of theexpansion rate and geometry of theuniverse lead them to conclude...

'Shot in the Dark' Star ExplosionStuns Astronomers

December 18, 2007 10:07:29 AM PST · bycrazyshrink · 39 replies · 89+ viewsEurekAlert ^ | 12/18/07 | Astronomers

When a shot is fired, one expects tosee a person with a gun. In the sameway, whenever a giant star explodes,astronomers expect to see a galaxy ofstars surrounding the site of the blast.This comes right out of basicastronomy, since almost all stars inour universe belong to galaxies. Imageright: The robotic Palomar 60-inchtelescope imaged the afterglow ofGRB 070125 on January 26, 2007.Right: An image taken of the samefield on February 16 with the 10-meter Keck I telescope reveals notrace of an afterglow, or a host galaxy.The white...

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Have we sealed the universe's fate bylooking at it?

November 21, 2007 10:55:16 AM PST · bycrazyshrink · 97 replies · 62+ viewsEurekAlert ^ | 21-Nov-2007 | LawrenceKrauss

HAVE we hastened the demise of theuniverse by looking at it? That’s thestartling question posed by a pair ofphysicists, who suggest that we mayhave accidentally nudged the universecloser to its death by observing darkenergy, which is thought to bespeeding up cosmic expansion.Lawrence Krauss of Case WesternReserve University in Cleveland,Ohio, and colleague James Dentsuggest that by making thisobservation in 1998 we may havecaused the universe to revert to a statesimilar to early in its history, when itwas more likely to end. “Incredible asit seems, our...

In 'Dark Energy,' Cosmic Humility(Mysterious Force ExpandingUniverse Ever Faster)

September 23, 2007 7:07:18 AM PDT · by

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PJ-Comix · 40 replies · 263+ viewsNewsweek ^ | October 1, 2007 | SharonBegley

To the ancients, exploding stars werebad news. To astronomer Adam Riess,poring over data from a telescope inChile, it looked like supernovas werestill cursed. He and his colleagueswere measuring the brightness anddistance of supernovas in order tofigure out the little matter of whetherthe universe would end in fire or inice. Would it halt its expansion andcollapse back on itself in a gnab gib(that's the reverse of the big bang, andpasses for humor among astronomers)or expand forever, its light andwarmth fading into eternal cold anddarkness? But when...

Dark matter behaves in an unexpectedway

August 28, 2007 11:51:06 AM PDT · bySunkenCiv · 36 replies · 329+ viewsarstechnica ^ | August 17, 2007 | ChrisLee

Radiation was used to pinpoint thenormal matter, while the observation

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of gravitational lensing was usedlocate dark matter. Gravitationallensing allows matter to be oberved,even when it does not emit or absorblight, by examining the movement ofgalaxies as our line of sight passesthrough the area of interest. Massiveobjects will distort the image andcause it to move in unexpecteddirections. Because the normal mattercould interact through electromagneticradiation, it was found to have slowedviolently during the collision whilethe dark matter sailed on through... Inthe meantime, other astronomersbegan using gravitational...

Is dark energy lurking in hiddenspatial dimensions?

July 16, 2007 12:26:58 PM PDT · bySunkenCiv · 16 replies · 517+ viewsNew Scientist ^ | Monday, July 16, 2007 |Stephen Battersby

The mysterious cosmic presencecalled dark energy, which isaccelerating the expansion of theuniverse, might be lurking in hiddendimensions of space. The idea would

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explain how these dimensions remainstable - a big problem for the unifiedscheme of physics called stringtheory... quantum vibrations in thevacuum of space (called vacuumenergy or the cosmological constant)that could produce repulsive gravity...should either possess a ridiculouslyhigh energy density - 122 orders ofmagnitude larger than are observed -or cancel out to exactly zero. To makethem almost-but-not-quite cancel, inagreement with astronomicalobservations, means fudging...

Mysteries of dark matter and bad hairdays at Mac

May 14, 2007 5:32:08 AM PDT · bySunkenCiv · 8 replies · 196+ viewsHamilton Spectator ^ | Monday, May 14,2007 | Rob Faulkner

...More than 100 scientists from acrossthe globe are descending onMcMaster University today... just 5per cent of the universe is made up ofmatter we've long known about --atoms, light, etc. The rest ismysterious dark matter (25 per cent)

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and the more recently discovered darkenergy (70 per cent)... "For the firsttime in the history of man, it'spossible to figure out the total energyin the universe, and the big news isthat atoms are at most 5 per cent ofwhat's out there," says Cliff Burgess,Mac professor of physics andastronomy, and...

Universal Accord {Cosmology}April 5, 2007 2:48:17 PM PDT · byLibWhacker · 40 replies · 765+ viewsSymmetry Magazine ^ | March 2007 |Rachel Courtland

Take one part unidentified goop. Addthree parts mysterious energy. Throwin a dash of ordinary atoms. Mix.Compress. Explode. Let expand for13.7 billion years. It's an absurdrecipe, but it's one that makescosmologists drool. Ten years ago, noone could agree on what the universeis made of, how it is shaped, or whatits ultimate fate will be. But less thanfive years later, long-awaitedmeasurements and one stunningdiscovery forever transformed our

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picture of the universe. The resultingmodel, often called the concordancemodel, holds that 22 percent of theuniverse is composed of dark...

First Dark Matter, Then DarkEnergy, Now a Dark Force?

January 9, 2007 12:12:54 AM PST · bySunkenCiv · 7 replies · 331+ viewsScientific American 'blogs ^ | January 8,2007 | George Musser

The poster child for dark matter,which got a lot of attention lastsummer, is the Bullet Cluster ofgalaxies... What's less well known isthat the smaller of the two collidingclusters is a cluster in a hurry, zippingalong at 4700 kilometers per second...Farrar... and her graduate studentRachael Rosen estimated a fewmonths ago that gravity should haveaccelerated the cluster to maybe 3000km/s. Even if the cluster had animprobable combination of elongatedshape, high initial velocity, andspecial viewing geometry, it shouldmove no faster than 3400 km/s. Farrarconcluded that some new...

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Mysterious force's long presenceNovember 16, 2006 7:22:01 PM PST · byJedi Master Pikachu · 26 replies · 445+viewsBBC ^ | November 16, 2006

Dark energy - the mysterious forcethat is speeding up the expansion ofthe Universe - has been a part ofspace for at least nine billion years.That is the conclusion of astronomerswho presented results from a three-year study using the Hubble SpaceTelescope. The finding may rule outsome competing theories that predictthe strength of dark energy changesover time. Dark energy makes upabout 70% of the Universe; the rest isdark matter (25%) and normal matter(5%). "It appears this dark energy wasalready boosting the expansion of theUniverse as much as...

Scientists Examine 'Dark Energy' ofAntigravity

November 16, 2006 4:27:32 PM PST · bySunkenCiv · 9 replies · 324+ viewsNew York Times ^ | November 16, 2006 |Dennis Overbye

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Now a group of astronomers using theHubble Space Telescope havediscovered that billions of yearsbefore this mysterious antigravityovercame cosmic gravity and sent thegalaxies scooting apart like musclecars departing a tollbooth, it wasalready present in space, affecting theevolution of the cosmos... The newresults, Dr. Riess and others said,provide new clues and place newlimits on the nature of dark energy, amystery that has thrown physics andcosmology into turmoil over the lastdecade... The data suggest that in factdark energy has changed little, if atall, over the course of...

Hubble telescope makes new discoveryNovember 16, 2006 9:07:52 PM PST · byNormsRevenge · 88 replies · 3,491+viewsAP on Yahoo ^ | 11/16/06 | Matt Crenson- ap

NEW YORK - The Hubble SpaceTelescope has shown that amysterious form of energy firstconceived by Albert Einstein, then

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rejected by the famous physicist as his"greatest blunder," appears to havebeen fueling the expansion of theuniverse for most of its history. Thisso-called "dark energy" has beenpushing the universe outward for atleast 9 billion years, astronomers saidThursday. "This is the first time wehave significant, discrete data fromback then," said Adam Riess, aprofessor of astronomy at JohnsHopkins University and researcher atNASA's Space Telescope ScienceInstitute. He and several colleagues...

NASA Finds Direct Proof of DarkMatter

August 21, 2006 6:13:30 PM PDT · byvikingd00d · 93 replies · 2,414+ viewsNASA News ^ | 21 Aug 2006 | Erica Hupp

Dark matter and normal matter havebeen wrenched apart by thetremendous collision of two largeclusters of galaxies. The discovery,using NASA's Chandra X-rayObservatory and other telescopes,gives direct evidence for the existenceof dark matter. "This is the most

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energetic cosmic event, besides theBig Bang, which we know about,"said team member Maxim Markevitchof the Harvard-Smithsonian Centerfor Astrophysics in Cambridge, Mass.These observations provide thestrongest evidence yet that most of thematter in the universe is dark. Despiteconsiderable evidence for dark matter,some scientists have proposedalternative theories for gravity whereit...

What if Black Holes Didn't Exist?July 23, 2006 1:05:35 PM PDT · byLibWhacker · 39 replies · 1,467+ viewsSeed Magazine ^ | 7/21/06 | RichardMorgan

How an alternate theory of theuniverse exposes the 'war of words'that underlies modern cosmology.Theoretical physicists have recentlybeen frustrated by a bold hypothesisconcerning black holes—specifically,that they don't exist. In March, at the22nd Pacific Coast Gravity Meeting inSanta Barbara, Calif., GeorgeChapline, an applied physicist at

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Lawrence Livermore NationalLaboratory, gave a talk based on ideashe's been incubating for several years.His goal: to amend astrophysics byapplying theories of dark energy andcondensed matter physics. His workreinvents black holes as so-called"dark energy stars," which are what isleft over when...

In the Dark on Matter - FabulousMatter and Energy

March 10, 2006 12:40:15 AM PST · bySwordmaker · 20 replies · 218+ views

Feb 28, 2006 In the Dark on MatterFabulous Matter and Energy Sincethere is no experimental or observableevidence that dark matter exists, is itjust a prop for the beleaguered bigbang theory? This highly speculativeconstruct is now combined with onejust as fabulous--dark energy--toshore up current cosmologicaldogma.Credit NASA/CXC/M.WeissAbove: Chandra X-Ray Observatoryestimates of the “total energy contentof the Universe”. Only "normalmatter” can be directly detected with

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telescopes. The rest of the matter andenergy is invisible. In the 1930s,astronomers Fritz Zwicky and SinclairSmith were puzzled by the motionsthey...

Three cosmic enigmas, one audaciousanswer [bye-bye to black holes?]

March 9, 2006 8:34:42 PM PST · bysnarks_when_bored · 103 replies ·2,301+ viewsNew Scientist ^ | March 9, 2006 | ZeeyaMerali

Three cosmic enigmas, one audaciousanswer 09 March 2006 Exclusivefrom New Scientist Print EditionZeeya Merali DARK energy and darkmatter, two of the greatest mysteriesconfronting physicists, may be twosides of the same coin. A new and asyet undiscovered kind of star couldexplain both phenomena and, in turn,remove black holes from the lexiconof cosmology. The audacious ideacomes from George Chapline, aphysicist at Lawrence LivermoreNational Laboratory in California, andNobel laureate Robert Laughlin of

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Stanford University and theircolleagues. Last week at the 22ndPacific Coast Gravity Meeting inSanta Barbara,...

Dark Matter: Hidden MassConfounds Science, InspiresRevolutionary Theories

January 15, 2002 7:02:17 AM PST · byPatrickHenry · 151 replies · 1,110+ viewsReuters ^ | 08 January 2002 | AndrewChaikin

Once upon a time -- a bit more than100 years ago -- many scientistsbelieved that seemingly empty spacewasn't empty at all, but was filled witha substance called luminous ether.This mysterious stuff, never seen inany laboratory on Earth, was thoughtto explain how gravity from onecelestial body could affect another. Bythe end of the 19th century, though,luminous ether had gone the way ofcountless other scientificmisconceptions. Today, anothermysterious substance beguilesastronomers, and this one isn't goingaway. In fact, it's been at the forefront

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of cosmological theories for decades.It's ...

Studies Suggest Unknown Form ofMatter Exists

July 30, 2002 9:43:53 PM PDT · by gcruse· 6 replies · 505+ viewsNew York Times ^ | July 31, 2002 | JamesGlanz

Painstaking observations of a kind ofsubatomic dance suggest that theuniverse may contain a shadowy formof matter that has never been seendirectly and is unexplained bystandard physics theories, a team ofscientists working at BrookhavenNational Laboratory on Long Islandannounced yesterday. The studiesappear to confirm similar findings thescientists reported last year. Theresearch involves muons, raresubatomic particles similar toelectrons but 207 times as heavy. Thework has been controversial, thoughfor reasons that have little to do withthe experiment itself. Theorists whoare not involved in the research, butwhose...

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Chandra Discovers "Rivers OfGravity" That Define CosmicLandscape

August 2, 2002 4:41:48 PM PDT · byvannrox · 59 replies · 903+ viewsScienceDaily Magazine ^ | Thursday,August 01, 2002 | Editorial Staff

Reprinted from ScienceDailyMagazine...Source: NASA/MarshallSpace Flight Center DatePosted: Thursday, August 01,2002WebAddress: http://www.sciencedaily.com/releases/2002/08/020801080835.htmChandra Discovers "Rivers OfGravity" That Define CosmicLandscape NASA's Chandra X-rayObservatory has discovered part of anintergalactic web of hot gas and darkmatter that contains most of thematerial in the universe. The hot gas,which appears to lie like a fog inchannels carved by rivers of gravity,has been hidden from view since thetime galaxies formed. "The Chandraobservations, together with ultravioletobservations, are a major advance inour understanding of how the universe

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evolved over the last 10 billion...

Earth's magnetic field 'boosts gravity'September 23, 2002 11:11:32 AM PDT ·by VadeRetro · 117 replies · 1,462+ viewsNew Scientist ^ | 09:20 22 September 02 |Michael Brooks

Exclusive from New Scientist Hiddenextra dimensions are causingmeasurements of the strength ofgravity at different locations on Earthto be affected by the planet's magneticfield, French researchers say. This is acontroversial claim because no onehas ever provided experimentalevidence to support either theexistence of extra dimensions or anyinteraction between gravity andelectromagnetism. But labmeasurements of Newton'sgravitational constant G suggest thatboth are real. Newton's constant,which describes the strength of thegravitational pull that bodies exert oneach other, is the most poorlydetermined of the constants of nature.The two...

An Introduction to Zero-Point Energy

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February 28, 2003 2:59:02 PM PST · bysourcery · 283 replies · 1,472+ viewsCalPhysics.org ^

Quantum physics predicts theexistence of an underlying sea ofzero-point energy at every point in theuniverse. This is different from thecosmic microwave background and isalso referred to as the electromagneticquantum vacuum since it is the loweststate of otherwise empty space. Thisenergy is so enormous that mostphysicists believe that even thoughzero-point energy seems to be aninescapable consequence ofelementary quantum theory, it cannotbe physically real, and so is subtractedaway in calculations. A minority ofphysicists accept it as real energywhich we cannot directly sense sinceit is the...

Extra Dimensions Showing Hints OfScientific Revolution

February 19, 2003 9:18:15 AM PST · byRightWhale · 73 replies · 948+ viewsspacedaily.com ^ | 19 Feb 03 | staff

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Extra Dimensions Showing Hints OfScientific Revolution Chicago - Feb19, 2003 The concept of extradimensions, dismissed as nonsenseeven by one of its earliest proponentsnearly nine decades ago, may soonhelp solve seemingly unrelatedproblems in particle physics,cosmology and gravitational physics,according to a panel of experts whospoke Feb. 15 at the AmericanAssociation for the Advancement ofScience annual meeting in Denver. "Itdoesn't happen often that you get aconfluence of ideas and experimentsthat come together and it's somethingthat obviously would change yourwhole way of looking at theuniverse,"...

Florida Physicist Says Dark Matter,Extra Dimensions Related AndPossibly Detectable

May 20, 2003 9:56:23 AM PDT · byRightWhale · 40 replies · 432+ viewsspacedaily.com ^ | 19 May 03 | staff

Florida Physicist Says Dark Matter,Extra Dimensions Related And

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Possibly Detectable the universe is the"twilight zone" Gainesville -May 19,2003 A team of scientists that includesa University of Florida physicist hassuggested that two of the biggestmysteries in particle physics andastrophysics -- the existence of extratime and space dimensions and thecomposition of an invisible cosmicsubstance called dark matter -- may beconnected. "For the most part, thesetwo questions have been treatedseparately in the past, and for the firsttime we're making a direct link," saidKonstantin Matchev, a UF assistant...

Universe 'Could Condense Into Jelly'September 6, 2001 4:07:20 PM PDT · byblam · 159 replies · 704+ viewsBBC ^ | 9-6-2001 | Helen Briggs

Thursday, 6 September, 2001, 10:39GMT 11:39 UK Universe 'couldcondense into jelly' By BBC NewsOnline's Helen Briggs The Universemay be in a state where matter coulddisintegrate at any moment, a scientisthas warned. But the probability is lessthan that of buying two lottery tickets

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in the same week that both win thelottery, said Dr Benjamin Allanach ofthe European laboratory for particlephysics, CERN, in Geneva. "The factthat the Universe has existed for 15billion years should tell you it's notlikely to happen tomorrow," he toldthe British Association Festival ofScience ...

"Dark energy" might not exist,scientists say

February 28, 2006 10:17:49 AM PST · bySunkenCiv · 13 replies · 325+ viewsWorld Science ^ | Feb. 14, 2006 | somegeek who doesn't have a Valentine

...The proposal bears an odd parallelto another modified-gravity theorythat has emerged in recent years, andwhich seeks to explain another darkentity: "dark matter." Not unlike darkenergy, dark matter is an unseensubstance that astronomers believepervades the cosmos, but it isdifferent. Dark matter, which wouldcomprise more than 90% of theweight of the universe, is thought tobetray its existence through its

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gravitational pull on nearby objects.Somewhat similarly to what ishappening with dark energy, somecosmologists have also devisedmodified-gravity theories in past yearsto explain these phenomena.

Is dark energy changing?January 13, 2006 3:38:06 AM PST · byPatrickHenry · 18 replies · 675+ viewsNature Magazine ^ | 12 January 2006 |Geoff Brumfiel,

Contrary to all expectations, themysterious dark energy that is pushingthe Universe apart may be changingwith time. By observing distant,powerful bursts of gamma rays(gamma-rays), Brad Schaefer says hehas preliminary evidence that thestrength of dark energy is differenttoday from when the Universe wasvery young. Schaefer, an astronomerat Louisiana State University in BatonRouge, presented his results at anAmerican Astronomical Societymeeting in Washington DC. Justminutes after the data were presentedin a late afternoon session, some

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astronomers were already calling thebold claim into question. An idea thatarose in...

Analysis of dark energy throughmodeling and inversion of 3-D gravitytensor field

October 28, 2005 9:45:05 AM PDT · byRed Badger · 51 replies · 917+ viewsIndia Daily ^ | 10/27/2005 | India DailyScience team

Volume-holographic optical imaginginstrument with the capability toreturn three-dimensional spatial aswell as spectral information aboutsemi-translucent microscopic objectsin a single measurement is in use indifferent parts of the world for the lastthree years. The four-dimensionalvolume-holographic microscope ischaracterized theoretically andexperimentally by use of fluorescentmicro-spheres as objects. Accordingto some scientists working underclassified projects these specialinstruments are revealing secrets ofthe nature that can be totally bizarre toour knowledge of science and

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technology. These four-dimensionalvolume-holographic optical imaginginstrument with the capability toreturn three-dimensional spatial aswell as spectral...

Finding a Way to Test for DarkEnergy [Cosmology]

August 30, 2005 4:55:36 AM PDT · byPatrickHenry · 17 replies · 756+ viewsPhysOrg.com ^ | 29 August 2005 | Staff

What is the mysterious dark energythat's causing the expansion of theuniverse to accelerate? Is it some formof Einstein's famous cosmologicalconstant, or is it an exotic repulsiveforce, dubbed "quintessence," thatcould make up as much as three-quarters of the cosmos? Scientistsfrom Lawrence Berkeley NationalLaboratory (Berkeley Lab) andDartmouth College believe there is away to find out. n a paper to bepublished in Physical Review Letters,physicists Eric Linder of BerkeleyLab and Robert Caldwell ofDartmouth show that physics modelsof dark energy can be separated into

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distinct scenarios, which could be...

Scientists Battle 'Dark Energy' Theoryof Universe

March 22, 2005 12:53:13 PM PST · by faq· 32 replies · 1,192+ viewsYahoo News, Reuters ^ | March 22, 2005| Phil Stewart

ROME (Reuters) - A small group ofphysicists are battling what they seeas the cosmological equivalent to thebogeyman: an enormous dark force,that nobody has ever seen, drivinggalaxies apart. Conventional wisdomholds that the mysterious force, called"dark energy," may make up 70percent of the universe, and could bethe determining factor in whether it iseventually destroyed billions of yearsfrom now. But Italian and Americancosmologists are offering acontroversial alternative to explain theaccelerating expansion of theuniverse. They say it's not darkenergy, but an overlooked after-effectof the "Big Bang" --...

Giant space-time ripples may causecosmic expansion

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March 19, 2005 5:16:19 AM PST · bysnarks_when_bored · 27 replies · 1,089+viewsNew Scientist (U.K.) ^ | March 18, 2005 |Maggie McKee

Giant space-time ripples may causecosmic expansion* 17:43 18 March2005 * NewScientist.com newsservice * Maggie McKee Dark energyis not necessary to explain theaccelerating expansion of the universeobserved by astronomers, suggestcontroversial new calculations.Instead, gigantic ripples in space-time- larger than the observable universe -may be the cause. Astronomers haveknown since the 1920s that spaceitself has been expanding since the bigbang about 14 billion years ago. Butin 1998, they discovered theexpansion must have sped up about abillion years ago, based onobservations of supernovae thatappeared farther away...

Was Einstein right when he said hewas wrong?

March 16, 2005 11:59:50 AM PST · by

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PatrickHenry · 140 replies · 2,888+ viewsPhysOrg.com ^ | 16 March 2005 | Staff

Why is the universe expanding at anaccelerating rate, spreading itscontents over ever greater dimensionsof space? An original solution to thispuzzle, certainly the most fascinatingquestion in modern cosmology, wasput forward by four theoreticalphysicists, Edward W. Kolb of theU.S. Department of Energy's FermiNational Accelerator Laboratory,Chicago (USA): Sabino Matarrese ofthe University of Padova; AlessioNotari from the University ofMontreal (Canada); and AntonioRiotto of INFN (Istituto Nazionale diFisica Nucleare) of Padova (Italy).Their study was submitted yesterdayto the journal Physical ReviewLetters. Over the last hundred years,the expansion...

Leaking Gravity May Explain CosmicPuzzle

February 28, 2005 6:29:00 PM PST · byAntiGuv · 69 replies · 2,783+ viewsSPACE.com ^ | February 28, 2005 | Sara

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Goudarzi

WASHINGTON, D.C. - Scientistsmay not have to go over to the darkside to explain the fate of theuniverse.The theory that theaccelerated expansion of the universeis caused by mysterious "dark energy"is being challenged by New YorkUniversity physicist Georgi Dvali. Hethinks there's just a gravityleak.Scientists have known since the1920s that the universe is expanding.In the late 1990s, they realized that itis expanding at an ever-increasingpace. At a loss to explain the stunningdiscovery, cosmologists blamed it ondark energy, a newly coined term todescribe the mysterious antigravityforce...

Big bang sound waves explain galaxyclustering

January 12, 2005 11:50:49 AM PST · bysnarks_when_bored · 69 replies · 1,785+viewsNew Scientist ^ | January 12, 2005 |Maggie McKee

Big bang sound waves explain galaxy

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clustering 13:32 12 January 2005NewScientist.com news serviceMaggie McKee, San Diego Soundwaves that roared through space afterthe big bang left behind a subtleimprint in the way galaxies areclustered today, reveal two majorstudies. The results bolster thestandard theory that the universe isflat, and measuring the distancebetween the sound ripples mayprovide a new cosmic yardstick toprobe the past. Two independentteams mapping the universe havefound that galaxies are currentlyhuddled together slightly more oftenat distances of 500 million light yearsas a...