{"id":4187,"date":"2023-08-11T18:48:31","date_gmt":"2023-08-11T18:48:31","guid":{"rendered":"https:\/\/dailyai.com\/?p=4187"},"modified":"2024-03-28T00:45:54","modified_gmt":"2024-03-28T00:45:54","slug":"decoding-the-universe-with-ai-and-machine-learning","status":"publish","type":"post","link":"https:\/\/dailyai.com\/sv\/2023\/08\/decoding-the-universe-with-ai-and-machine-learning\/","title":{"rendered":"Avkoda universum med AI och maskininl\u00e4rning"},"content":{"rendered":"<p><strong>I det forntida Babylonien gjorde stj\u00e4rnsk\u00e5dare noggranna observationer av natthimlen och ristade in sina iakttagelser i tavlor f\u00f6r att notera de mest subtila r\u00f6relser p\u00e5 himlavalvet.\u00a0<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">Deras observationer, tillsammans med andra forntida civilisationer, lade grunden f\u00f6r framst\u00e5ende personer som Johannes Kepler, som anv\u00e4nde Tycho Brahes data f\u00f6r att avsl\u00f6ja planeternas elliptiska banor l\u00e5ngt innan vi hade verktygen f\u00f6r att observera s\u00e5dana fenomen med v\u00e5ra egna \u00f6gon.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">I dag \u00e4r m\u00e4nskligheten inte mindre angel\u00e4gen om att avkoda kosmos invecklade mysterier, och AI har blivit en partner i v\u00e5r str\u00e4van efter svar.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Glaslinser till gigabytes<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Teleskopet uppfanns i b\u00f6rjan av 1600-talet och gav astronomerna ett f\u00f6nster mot kosmos. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">F\u00f6r f\u00f6rsta g\u00e5ngen kunde m\u00e4nniskans \u00f6gon tr\u00e4nga bortom atmosf\u00e4ren.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">F\u00f6rutom att direkt observera himlakroppar med hj\u00e4lp av teleskop blev m\u00e4nskligheten skicklig p\u00e5 att ber\u00e4kna interaktioner mellan banor, vilket s\u00e5 sm\u00e5ningom ledde till att den franske astronomen Urbain Le Verrier f\u00f6rutsp\u00e5dde Neptunus existens utifr\u00e5n Uranus bana innan det bekr\u00e4ftades 1846.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Matematik och astronomi har varit intimt f\u00f6rknippade i tusentals \u00e5r, och det \u00e4r dessa ber\u00e4kningar som AI excellerar i.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">N\u00e4r rymdteleskopet Kepler lanserades 2009 inleddes en ny era inom utforskningen av extrasol\u00e4ra planeter. Med uppgift att identifiera exoplaneter - planeter som ligger utanf\u00f6r v\u00e5rt solsystem - genom att \u00f6vervaka ljusstyrkan hos mer \u00e4n 150 000 stj\u00e4rnor, skickade Kepler en kolossal m\u00e4ngd data tillbaka till jorden.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00c4ven om \u00f6ver 2 600 exoplaneter bekr\u00e4ftades under dess uppdrag, analyserar forskarna fortfarande data idag.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00c5r 2021, \u00f6ver 10 \u00e5r sedan teleskopet lanserades, meddelade NASA att en AI-modell hade hj\u00e4lpt forskarna att l\u00e4gga till 301 nyligen validerade exoplaneter till den totala samlingen p\u00e5 4 569.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Modellen, ett djupt neuralt n\u00e4tverk <\/span><a href=\"https:\/\/arxiv.org\/abs\/2111.10009\"><span style=\"font-weight: 400;\">med namnet ExoMiner<\/span><\/a><span style=\"font-weight: 400;\">skulle kunna validera dessa f\u00f6reslagna exoplaneter p\u00e5 ett robust s\u00e4tt - en bedrift som annars skulle kr\u00e4va l\u00e5ngvarig manuell analys.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Hamed Valizadegan, projektledare f\u00f6r ExoMiner, s\u00e4ger: \"N\u00e4r ExoMiner s\u00e4ger att n\u00e5got \u00e4r en planet kan man vara s\u00e4ker p\u00e5 att det \u00e4r en planet. <\/span><span style=\"font-weight: 400;\">ExoMiner \u00e4r mycket exakt och p\u00e5 vissa s\u00e4tt mer tillf\u00f6rlitlig \u00e4n b\u00e5de befintliga maskinklassificerare och de m\u00e4nskliga experter som den \u00e4r t\u00e4nkt att efterlikna p\u00e5 grund av de f\u00f6rdomar som kommer med m\u00e4nsklig m\u00e4rkning.\"<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Universellt ursprung<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Den v\u00e4staustraliensiska vildmarken \u00e4r hem till <\/span><a href=\"https:\/\/www.mwatelescope.org\/\"><span style=\"font-weight: 400;\">Murchison Widefield Array (MWA)<\/span><\/a><span style=\"font-weight: 400;\">. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Till skillnad fr\u00e5n traditionella teleskop \u00e4r MWA ett radioteleskop som lyssnar p\u00e5 universums tidiga radiov\u00e5gor.\u00a0<\/span><\/p>\n<figure id=\"attachment_4189\" aria-describedby=\"caption-attachment-4189\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4189 size-large\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-1024x769.jpg\" alt=\"\" width=\"1024\" height=\"769\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-1024x769.jpg 1024w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-300x225.jpg 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-768x577.jpg 768w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-1536x1154.jpg 1536w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-370x278.jpg 370w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-800x601.jpg 800w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-20x15.jpg 20w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-740x556.jpg 740w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-1600x1202.jpg 1600w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile-64x48.jpg 64w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/MWA_32T_Tile.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption id=\"caption-attachment-4189\" class=\"wp-caption-text\">En av MWA:s m\u00e5nga matriser. K\u00e4lla: MWA <a href=\"https:\/\/en.wikipedia.org\/wiki\/Murchison_Widefield_Array#\/media\/File:MWA_32T_Tile.jpg\">Wikipedia Commons<\/a>.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">Genom att f\u00e5nga upp radiosignaler fr\u00e5n rymden ger MWA en glimt av universums tillst\u00e5nd f\u00f6r n\u00e4stan 13 miljarder \u00e5r sedan. Detta \u00e4r inte utan utmaningar, eftersom dagens radiost\u00f6rningar hotar att dr\u00e4nka universums urgamla utsagor.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Med hj\u00e4lp av AI kan forskare <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S2213133723000434\">filtrera och s\u00e4rskilja<\/a> mellan radiobrus och universums urtida viskningar, vilket m\u00f6jligg\u00f6r mer exakta analyser.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Visualisering av himlakroppar<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Den <\/span><a href=\"https:\/\/eventhorizontelescope.org\/\"><span style=\"font-weight: 400;\">Event Horizon-teleskopet<\/span><\/a><span style=\"font-weight: 400;\"> (EHT), som tog den f\u00f6rsta bilden av ett svart h\u00e5l, f\u00f6rlitade sig p\u00e5 AI-behandling f\u00f6r att omvandla sina observationer till n\u00e5got tydligt och sammanh\u00e4ngande.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> EHT sammanf\u00f6r flera teleskop fr\u00e5n hela v\u00e4rlden f\u00f6r att skapa ett enda megateleskop.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Med hj\u00e4lp av de kombinerade krafterna hos flera teleskopupps\u00e4ttningar kunde EHT observera det supermassiva svarta h\u00e5let i mitten av Vintergatan. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">F\u00f6r att omvandla dessa observationer till en korrekt bild kr\u00e4vs maskininl\u00e4rning (ML) f\u00f6r att ber\u00e4kna den mest sannolika formen utifr\u00e5n tillg\u00e4ngliga data.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">ML-modellen, <\/span><a href=\"https:\/\/earthsky.org\/space\/black-hole-messier-87-machine-learning-primo\/\"><span style=\"font-weight: 400;\">PRIMO<\/span><\/a><span style=\"font-weight: 400;\">analyserade egenskaperna hos 30.000 simulerade svarta h\u00e5l f\u00f6r att generera den vitt spridda bilden nedan.<\/span><\/p>\n<figure id=\"attachment_4188\" aria-describedby=\"caption-attachment-4188\" style=\"width: 1024px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4188 size-large\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-1024x822.png\" alt=\"\" width=\"1024\" height=\"822\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-1024x822.png 1024w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-300x241.png 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-768x617.png 768w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-370x297.png 370w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-800x642.png 800w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-20x16.png 20w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-740x594.png 740w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole-60x48.png 60w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/blackhole.png 1095w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption id=\"caption-attachment-4188\" class=\"wp-caption-text\">Den f\u00f6rsta bilden av ett svart h\u00e5l skapades med hj\u00e4lp av AI. K\u00e4llan \u00e4r: <a href=\"https:\/\/eventhorizontelescope.org\/\">Even Horizon Telescope<\/a>.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\"> Det svarta h\u00e5let ber\u00e4knas vara 6,5 miljarder g\u00e5nger s\u00e5 stort som solen.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">AI uppt\u00e4cker \"potentiellt farlig\" asteroid<\/span><\/h2>\n<p>Vi h\u00f6r mycket om riskerna med AI, men t\u00e4nk om AI kunde r\u00e4dda oss fr\u00e5n en d\u00f6dlig asteroid?<\/p>\n<p><span style=\"font-weight: 400;\">Forskare vid det kommande Vera Rubin-observatoriet i norra Chile AI-modell uppt\u00e4ckte nyligen en potentiellt farlig asteroid med hj\u00e4lp av AI.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Vera Rubin-observatoriet i norra Chile, som fortfarande \u00e4r under uppbyggnad, kommer att bli den mest kraftfulla digitalkamera som anv\u00e4nds f\u00f6r astronomisk fotografering,\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/www.washington.edu\/news\/2023\/07\/31\/heliolinc3d\/\"><span style=\"font-weight: 400;\">HelioLinc3D<\/span><\/a><span style=\"font-weight: 400;\">, AI-programmet som ligger bakom uppt\u00e4ckten, utformades f\u00f6r att st\u00f6dja Vera C. Rubin-observatoriets arbete med att uppt\u00e4cka asteroider. Modellen anv\u00e4ndes i en testk\u00f6rning vid ATLAS-observatoriet p\u00e5 Hawaii.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">AI avt\u00e4ckte en asteroid som var cirka 180 meter bred och fick namnet 2022 SF289.\u00a0<\/span><\/p>\n<p><iframe loading=\"lazy\" title=\"2022 SF289: Ny kod f\u00e5ngar in sin f\u00f6rsta potentiellt farliga asteroid\" width=\"1080\" height=\"608\" src=\"https:\/\/www.youtube.com\/embed\/bsuUWt4udKg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p><span style=\"font-weight: 400;\">Detta himlakroppsf\u00f6rem\u00e5l, som ber\u00e4knas vara cirka 182 meter brett, f\u00f6rv\u00e4ntas komma s\u00e5 n\u00e4ra jorden som 225.000 kilometer.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Med tanke p\u00e5 att m\u00e5nens genomsnittliga avst\u00e5nd fr\u00e5n jorden \u00e4r cirka 384 400 km (238 855 miles) \u00e4r den n\u00e4rmare \u00e4n vad de r\u00e5a siffrorna verkar antyda, vilket g\u00f6r att den betecknas som en potentiellt farlig asteroid (PHA). Var s\u00e5 s\u00e4ker - den f\u00f6rv\u00e4ntas inte tr\u00e4ffa oss.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">HelioLinc3D \u00e4r mycket snabbare och effektivare \u00e4n nuvarande metoder n\u00e4r det g\u00e4ller att uppt\u00e4cka potentiellt farliga asteroider.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> Traditionellt kr\u00e4ver detta att man tar bilder av specifika himmelsegment flera g\u00e5nger per natt, medan HelioLinc3D kr\u00e4ver f\u00e4rre observationer och fungerar bra med ljussvaga objekt.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Teleskop f\u00e5ngar ofta upp en stor m\u00e4ngd oanv\u00e4ndbart brus n\u00e4r de observerar svaga objekt, vilket g\u00f6r det exceptionellt sv\u00e5rt att uppt\u00e4cka \u00e4kta asteroider.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Larry Denneau, ledande ATLAS-astronom, lyfte fram <\/span><a href=\"https:\/\/www.washington.edu\/news\/2023\/07\/31\/heliolinc3d\/\"><span style=\"font-weight: 400;\">konsekvenserna av denna uppt\u00e4ckt<\/span><\/a><span style=\"font-weight: 400;\">: \"Alla unders\u00f6kningar kommer att ha sv\u00e5rt att uppt\u00e4cka objekt som 2022 SF289 som ligger n\u00e4ra dess k\u00e4nslighetsgr\u00e4ns, men HelioLinc3D visar att det \u00e4r m\u00f6jligt att hitta dessa svaga objekt s\u00e5 l\u00e4nge de \u00e4r synliga under flera n\u00e4tter. Detta ger oss i sj\u00e4lva verket ett \"st\u00f6rre, b\u00e4ttre\" teleskop.\"<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Mario Juri\u0107, forskare vid Rubin och teamledare f\u00f6r HelioLinc3D, s\u00e4ger: \"Det h\u00e4r \u00e4r bara en liten f\u00f6rsmak av vad vi kan f\u00f6rv\u00e4nta oss av Rubinobservatoriet om mindre \u00e4n tv\u00e5 \u00e5r, n\u00e4r HelioLinc3D kommer att uppt\u00e4cka ett objekt som detta varje natt.\"\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Han tillade: \"Men mer allm\u00e4nt \u00e4r det en f\u00f6rhandsvisning av den kommande eran av dataintensiv astronomi. Fr\u00e5n HelioLinc3D till AI-assisterade koder kommer n\u00e4sta decennium av uppt\u00e4ckter att handla om framsteg inom algoritmer lika mycket som inom nya, stora teleskop.\"<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Best\u00e4mning av stj\u00e4rnors \u00e5lder med AI<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">AI hj\u00e4lper ocks\u00e5 forskare att kartl\u00e4gga universums historia.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">En ny modell som utvecklats som en AI-f\u00f6rst\u00e4rkt version av ett \u00e4ldre projekt, <\/span><a href=\"https:\/\/arxiv.org\/abs\/2304.12197\"><span style=\"font-weight: 400;\">EAGLES (uppskattning av \u00e5lder fr\u00e5n litiumekvivalenta bredder)<\/span><\/a><span style=\"font-weight: 400;\">analyserar f\u00f6rekomsten av litium i stj\u00e4rnor f\u00f6r att uppskatta deras \u00e5lder.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Historiskt sett b\u00f6rjar alla stj\u00e4rnor sitt liv med en liknande andel litium. Men n\u00e4r de \u00e5ldras utarmas detta litium i olika takt p\u00e5 grund av faktorer som deras massa och tillh\u00f6rande temperaturer.\u00a0<\/span><\/p>\n<figure id=\"attachment_4192\" aria-describedby=\"caption-attachment-4192\" style=\"width: 728px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4192\" src=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446.jpg\" alt=\"Stj\u00e4rnor kan \u00e5ldras via deras litiuminneh\u00e5ll. \" width=\"728\" height=\"485\" srcset=\"https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446.jpg 1000w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-300x200.jpg 300w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-768x512.jpg 768w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-370x247.jpg 370w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-800x534.jpg 800w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-20x13.jpg 20w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-740x494.jpg 740w, https:\/\/dailyai.com\/wp-content\/uploads\/2023\/08\/shutterstock_686408446-72x48.jpg 72w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><figcaption id=\"caption-attachment-4192\" class=\"wp-caption-text\">Stj\u00e4rnor kan \u00e5ldras via deras litiuminneh\u00e5ll.<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">En stj\u00e4rnas temperatur, som \u00e4r en indikation p\u00e5 dess massa, spelar en avg\u00f6rande roll f\u00f6r dess litiumf\u00f6rbrukning.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">I hetare stj\u00e4rnor orsakar den \u00f6kade konvektionen i de yttre lagren turbulens som skickar litium djupare in i stj\u00e4rnan d\u00e4r det sm\u00e4lter samman med protoner och bildar tv\u00e5 heliumk\u00e4rnor. F\u00f6ljaktligen sjunker litiumniv\u00e5erna \u00f6ver tid.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Genom att observera en stj\u00e4rnas litiumhalt tillsammans med dess temperatur kan astronomer extrapolera dess \u00e5lder.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">F\u00f6r att best\u00e4mma en stj\u00e4rnas \u00e5lder utifr\u00e5n dess litium har man traditionellt bed\u00f6mt litiumets styrka i spektrografiska data och matchat den med etablerade modeller f\u00f6r stj\u00e4rnornas utveckling.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Denna process var inte bara m\u00f6dosam utan ocks\u00e5 begr\u00e4nsad i omfattning. George Weaver vid Keele University i Storbritannien p\u00e5pekade att detta \u00e4r \"sv\u00e5rt att g\u00f6ra och kr\u00e4ver mycket arbete\".\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Weaver och astrofysikern Robin Jeffries fr\u00e5n University of Keele utvecklade EAGLES-algoritmen f\u00f6r att effektivisera denna process.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Genom att tr\u00e4na EAGLES p\u00e5 ett dataset med 6.000 stj\u00e4rnor fr\u00e5n 52 kluster observerade av <\/span><a href=\"https:\/\/www.esa.int\/Science_Exploration\/Space_Science\/Gaia\"><span style=\"font-weight: 400;\">Gaia-uppdraget<\/span><\/a><span style=\"font-weight: 400;\">utvecklade de en modell som kunde uppskatta en stj\u00e4rnas l\u00f6n med minimalt manuellt arbete.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">EAGLES kommer snart att anv\u00e4ndas f\u00f6r tv\u00e5 omfattande unders\u00f6kningar: WEAVE-unders\u00f6kningen p\u00e5 William Herschel-teleskopet 2023 och 4MOST-unders\u00f6kningen p\u00e5 VISTA-teleskopet vid Europeiska sydobservatoriet 2024.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\"Det h\u00e4r \u00e4r tv\u00e5 stora spektroskopiska unders\u00f6kningar som kommer att ta spektra av bokstavligen tiotals miljoner stj\u00e4rnor\", s\u00e4ger Jeffries. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ett av syftena med unders\u00f6kningarna \u00e4r att kartl\u00e4gga stj\u00e4rnbildningens historia i olika stj\u00e4rnpopulationer i galaxen.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Elon Musks xAI<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Vi kan inte l\u00e4mna Elon Musk utanf\u00f6r en existentiell diskussion som omfattar hela kosmos.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">I juli presenterade Musk sin senaste m\u00e5nskenshistoria - <\/span><a href=\"https:\/\/x.ai\/\"><span style=\"font-weight: 400;\">xAI<\/span><\/a><span style=\"font-weight: 400;\">. Detta <\/span><a href=\"https:\/\/dailyai.com\/sv\/2023\/07\/musks-mission-for-xai-is-to-find-out-what-the-hell-is-really-going-on\/\"><span style=\"font-weight: 400;\">ny mystisk AI-startup<\/span><\/a><span style=\"font-weight: 400;\"> har f\u00f6r avsikt att unders\u00f6ka angel\u00e4gna vetenskapliga begrepp som m\u00f6rk materia, m\u00f6rk energi, Fermiparadoxen och existensen av utomjordingar.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Enligt Musk kommer xAI att unders\u00f6ka \"grundl\u00e4ggande fr\u00e5gor\" om \"verkligheten\" och \"universum\".<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Musk och hans team h\u00f6ll en Twitter Spaces-diskussion om xAI, och \u00e4ven om det var sp\u00e4nnande klargjorde det inte s\u00e5 mycket om startupens strategi.\u00a0<\/span><span style=\"font-weight: 400;\">Fr\u00e5n och med augusti 2023 finns det ingen konkret information om vad man avser att g\u00f6ra och hur.\u00a0<\/span><\/p>\n<blockquote class=\"twitter-tweet\">\n<p dir=\"ltr\" lang=\"en\">Bra sammanfattning <a href=\"https:\/\/t.co\/s2QE9zuzp4\">https:\/\/t.co\/s2QE9zuzp4<\/a><\/p>\n<p>- xAI (@xai) <a href=\"https:\/\/twitter.com\/xai\/status\/1680044214095339521?ref_src=twsrc%5Etfw\">15 juli 2023<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p><span style=\"font-weight: 400;\">Vissa spekulerar i att xAI kommer att bygga vetenskaps- och statistikorienterade AI-modeller f\u00f6r att s\u00e4tta fart p\u00e5 forskningen. Det kan ta formen av en vetenskapsorienterad AI-\"generalagent\" som kan utf\u00f6ra praktiskt taget alla ovanst\u00e5ende funktioner. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">xAI skulle kunna bidra med sin datorkraft till vetenskapliga forskare, vilket skulle minska vissa flaskhalsar som \u00e4r f\u00f6rknippade med att anv\u00e4nda komplexa modeller i akademiska milj\u00f6er.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00c5 andra sidan kanske xAI bara kulminerar i ytterligare en stor spr\u00e5kmodell (LLM), eller s\u00e5 kanske det inte blir s\u00e5 mycket alls - \u00e4ven om det skulle vara en besvikelse med tanke p\u00e5 kalibern hos startupens grundarteam.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Om xAI levererar en superkraftig AI-modell f\u00f6r forsknings\u00e4ndam\u00e5l kan detta g\u00f6ra det m\u00f6jligt f\u00f6r forskare att skapa specialiserade modeller f\u00f6r alla m\u00f6jliga till\u00e4mpningar inom fysik, astronomi, medicin, klimatologi och andra omr\u00e5den.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Trots sina problem ger AI m\u00e4nskligheten verktyg f\u00f6r att utforska nya omr\u00e5den som man inte trodde var m\u00f6jliga f\u00f6r bara n\u00e5gra \u00e5r sedan.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Denna teknik, som fortfarande \u00e4r i sin linda, visar sin potential att identifiera farliga asteroider, exoplaneter och stj\u00e4rnors \u00e5lder, vilket g\u00f6r att vi kan vidga v\u00e5ra kosmiska vyer och v\u00e5r kunskap om universum. <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bortsett fr\u00e5n alla risker \u00e4r det en lockande tanke att anv\u00e4nda AI f\u00f6r att utforska universums hemligheter.<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>I det forntida Babylonien gjorde stj\u00e4rnsk\u00e5dare noggranna nedteckningar av natthimlen och ristade in sina observationer p\u00e5 tavlor f\u00f6r att notera de mest subtila r\u00f6relser p\u00e5 himlen.  Deras observationer, tillsammans med andra forntida civilisationer, lade grunden f\u00f6r framst\u00e5ende personer som Johannes Kepler, som anv\u00e4nde Tycho Brahes data f\u00f6r att avsl\u00f6ja planeternas elliptiska banor l\u00e5ngt innan vi hade verktygen f\u00f6r att observera s\u00e5dana fenomen med v\u00e5ra egna \u00f6gon. I dag \u00e4r m\u00e4nskligheten inte mindre angel\u00e4gen om att avkoda kosmos invecklade egenskaper, och AI har blivit en partner i v\u00e5r str\u00e4van efter svar.  Glaslinser till gigabytes Teleskopet uppfanns i b\u00f6rjan av 1600-talet och gav astronomer ett<\/p>","protected":false},"author":2,"featured_media":4190,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[298,188,105,297,296,223],"class_list":["post-4187","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-astronomy","tag-elon-musk","tag-machine-learning","tag-nasa","tag-space","tag-xai"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Decoding the universe with AI and machine learning | DailyAI<\/title>\n<meta name=\"description\" content=\"In ancient Babylonia, star-gazers meticulously chronicled the night sky, carving their observations in tablets to note the subtlest celestial movements.\u00a0\" \/>\n<meta name=\"robots\" content=\"index, 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