IceCubestaresinto a cubickilometeroficeneartheSouthPoleinordertostudyneutrinos, whicharefastmovingelusive, incrediblytinysubatomicparticlesthatwemostlyunderstandexceptfor a bunchofstuffthatwe'restilltryingtolearnabouthimandneutrinoswillpassthroughjustaboutanythingwithoutbumpingintothemlike a trilliongothroughyournoseeverysecond, whichmakesthemincrediblydifficulttostudyin a laboratory.
Butin 1999 a teamofscientistspointedoutthattheycouldjustusetheAntarcticicesheetasonegiantneutrinotarget, whichledtothedevelopmentoftheIceCubeProject C.
Neutrinodetectorsdon't needtobemadeofanythingspecial, buttheydoneedtobeprettybigandprettyseethrough, like a gianticesheet.
Mostneutrinoswillactuallypassrightthroughtheice, buteveryoncein a whileonecrashesinto a watermoleculein.
Thatcollisionsetsoff a chainreactionthateventuallyreleaseslightthaticecubesdetectorscansee.
Butthelightdoesn't justtellIceCubescientiststhattherewas a neutrinothere.
Lotsofthingsintheuniversemakeneutrinos, butfarfewermakeneutrinoswiththismuchenergyasicecubes, detectorsaretunedtonotice, andthosedetectorssee a couple 100 neutrinos a day.
Thereare, ofcourse, alsomoretraditionaltelescopesinAntarctica, including a fewthatstudymicrowaves, thetypeofthingthatyoumightuseinyourkitchentoheatup a burrito.
TheCMBis a sortoffingerprintoftheBigBangthatletsscientistsexaminetheuniversewhenitwasonly a couple 100,000 yearsoldbyrevealinghowmatterwasdistributedallthewaybackthen, astronomerscontesttheBigBangmodelbytestingitspredictionsofhowtheuniverseevolvedandwheremattershouldbeagainsttheblobbyarrangementsofmatterthatweseeintheCMB.
It's oneofthebesttoolsforunderstandingtheuniverse, andAntarcticaisoneofthefewplacesonearthwith a clearview, andbicepsalreadymadesomegreatcontributionstoourunderstandingofthecosmos.
SoSP T canunderstandtheamountofmassintheclustersbylookingathowmuchthelightisdistortedandbyunderstandingclustersastronomers, I canunderstandthekindsofinfluencesthatformedthem, andthatincludesstuffthatwedon't fullyunderstand, likedarkmatteranddarkenergy, Darkmatterpullsthingsintheuniversetogetherwithoutemittingitsownlightanddarkenergypushesthingsapart.
ButNASAhasfound a waytouseAntarcticaispowersforgood.
They'velaunched a seriesoffootballfieldsizedballoonsthatgetcarriedaroundthecontinentbythosestrong, predictablewindsgivingusobservatory's thatjustfloataroundkilometersofftheground.
Theicesheetactslike a conveyorbeltasitflows, carryingoldmeteorrightsalongfortherideuntilitcrunchesupagainstsomethinglike a mountainrangenearthemountainrange.