Video: Dab tsi yog qhov pov thawj rau lub zog tsaus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov pov thawj ntawm kev muaj. Cov pov thawj rau tsaus zog yog tsis ncaj ncees lawm tab sis los ntawm peb qhov kev ywj pheej: kev ntsuas deb thiab lawv cov kev sib raug zoo rau redshift, uas qhia tias lub ntiaj teb tau nthuav dav ntau dua hauv ib nrab ntawm nws lub neej.
Ntxiv mus, dab tsi yog pov thawj rau qhov tsaus ntuj?
Thawj pov thawj rau qhov tsaus ntuj los ntawm kev suav qhia tias ntau lub galaxies yuav ya sib nrug, los yog tias lawv yuav tsis tsim lossis tsis txav raws li lawv ua, yog tias lawv tsis muaj ntau qhov tsis pom. teeb meem.
Tsis tas li ntawd, peb yuav ua li cas thiaj paub tias muaj zog tsaus nti? Qhov nkhaus hloov pauv tau pom zoo txog 7.5 billion xyoo dhau los, thaum cov khoom hauv lub ntiaj teb pib ya sib nrug raws li tus nqi nrawm dua. Astronomers theorize tias qhov nthuav dav sai yog vim muaj qhov tsis meej, tsaus ntuj lub zog uas rub galaxies sib nrug. Ib qho kev piav qhia rau tsaus zog yog tias nws yog ib qho khoom ntawm qhov chaw.
Ua raws li qhov no, dab tsi yog qhov pov thawj tseem ceeb rau lub zog tsaus ntuj hauv lub qab ntuj khwb?
Tsaus zog tsis zoo li lub ntiajteb txawj nqus nyob rau hauv uas nws repels teeb meem thiab yog li ntawd ua rau expansion ntawm lub ntug kom nrawm. Thawj pov thawj rau tsaus zog los ntawm kev soj ntsuam supernovae hauv 1998 thiab ntxiv mus pov thawj tuaj txog ua ntej xyoo no los ntawm kev soj ntsuam ntawm 250,000 galaxies.
Lub zog tsaus nti hauv lub qab ntuj khwb yog dab tsi?
Tsaus Zog yog ib daim ntawv hypothetical zog uas exerts ib tug tsis zoo, repulsive siab, coj zoo li qhov opposite ntawm lub ntiajteb txawj nqus. Tsaus Zog ua 72% ntawm tag nrho cov huab hwm coj- zog ceev ntawm cov ntug . Lwm tus tseem ceeb contributor yog Tsaus Teeb meem, thiab ib qho me me yog vim atoms lossis baryonic teeb meem.
Pom zoo:
Koj ua pov thawj li cas cov kab yog sib npaug hauv cov ntawv pov thawj?
Thawj yog yog tias cov ces kaum sib thooj, cov ces kaum uas nyob rau tib lub ces kaum ntawm txhua qhov kev sib tshuam, sib npaug, ces cov kab sib npaug. Qhov thib ob yog yog tias qhov sib txawv sab hauv lub kaum sab xis, cov ces kaum uas nyob rau sab nraud ntawm lub transversal thiab sab hauv cov kab sib npaug, sib npaug, ces cov kab sib npaug
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