Video: Vim li cas nws thiaj hu ua nebula?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A nebula (Latin rau 'huab' lossis 'fog'; pl. nebula , nebule or nebulas ) yog ib lub hnub qub huab ntawm plua plav, hydrogen, helium thiab lwm yam ionized gases. Keeb kwm, lo lus no tau siv los piav txog txhua yam khoom siv astronomical diffuse, suav nrog cov galaxies dhau ntawm Milky Way.
Tsis tas li ntawd, dab tsi ua rau nebula?
Nebula Tsim: Hauv essence, a nebula yog tsim thaum ib feem ntawm lub hnub qub nruab nrab undergo gravitational collapse. Mutual gravitational attraction ua rau teeb meem rau clump ua ke, tsim cov cheeb tsam ntawm ntau dua thiab ntau dua ntom ntom.
Tsis tas li ntawd, yuav ua li cas lub nebula ua ib tug protostar? Nyob rau tib lub sijhawm, hydrogen gas nyob rau hauv lub nebula yog rub ua ke los ntawm lub ntiajteb txawj nqus thiab nws pib tig. Raws li cov pa roj nrawm dua, nws ua kom sov thiab dhau los ua ib qho protostar . Thaum kawg qhov kub nce mus txog 15, 000, 000 degrees thiab nuclear fusion tshwm sim nyob rau hauv huab lub hauv paus.
Qhov thib ob, vim li cas planetary nebulae hu ua qhov ntawd?
Cov txheej txheej ntawm cov roj no nthuav mus rau hauv qhov chaw, tsim ib qho nebula uas feem ntau yog cov duab ntawm lub nplhaib lossis npuas. Txog 200 xyoo dhau los, William Herschel hu ua cov huab cua puag ncig planetary nebulae vim lawv puag ncig zoo li tus ntiaj chaw.
Nebula geography yog dab tsi?
Txhais. A nebula yog ib qho huab interstellar ntawm hmoov av, hydrogen, helium, thiab lwm yam gases. Nebula (ntau tshaj ib nebula ) feem ntau yog lub hnub qub tsim cov cheeb tsam, qhov twg cov pa roj, plua plav, thiab lwm yam khoom siv 'pawg' ua ke los tsim cov khoom loj, uas nyiam cov teeb meem ntxiv, thiab thaum kawg yuav loj txaus los tsim cov hnub qub.
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