Hom hnub qub twg muaj lub neej luv tshaj?

Video: Hom hnub qub twg muaj lub neej luv tshaj?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Yog li tag nrho lub neej ntawm a hnub qub nrog huab hwm coj ntawm lub hnub yog kwv yees li 10 billion xyoo. Cov hnub qub me tshaj plaws yog cov dwarfs liab, cov no pib ntawm 50% qhov loj ntawm lub hnub, thiab tuaj yeem ua rau me me li 7.5% ntawm lub hnub.

Yog li ntawd, cov hnub qub twg nyob ntev tshaj plaws thiab luv tshaj?

Feem ntau, qhov loj dua a hnub qub yog, qhov nrawm dua nws siv nws cov khoom siv hluav taws xob nuclear, yog li cov ntev tshaj plaws - nyob hnub qub yog cov tsawg tshaj plaws. Cov hnub qub nrog rau ntev tshaj plaws lub neej yog liab dwarfs; tej zaum yuav ze li qub li lub qab ntuj khwb nws tus kheej.

Dab tsi yog qhov lifespan ntawm ib tug ntsias dawb? Tom qab pib siv kwv yees li 1.5 billion xyoo kom txias rau qhov kub ntawm 7,140 K, txias li ntawm 500 ntau kelvins mus rau 6,590 K yuav siv li ntawm 0.3 billion xyoo, tab sis ob kauj ruam tom ntej ntawm ib ncig ntawm 500 kelvins (rau 6,030 K. thiab 5, 550 K) coj thawj 0.4 thiab tom qab ntawd 1.1 billion xyoo.

Raws li, hom hnub qub nyob ntev npaum li cas?

A hnub qub zoo li peb lub hnub nyob txog 10 billion xyoo, thaum a hnub qub uas hnyav 20 npaug ntau npaum li lub neej tsuas yog 10 lab xyoo, txog ib txhiab li ntev . Hnub qub pib lawv lub neej raws li huab cua ntom ntom ntawm cov pa roj thiab hmoov av.

Cov hnub qub tuag li cas?

Hnub qub tuag vim lawv tso lawv cov roj nuclear. Thaum tsis muaj roj tshuav, lub hnub qub collapses thiab txheej txheej tawg raws li ib tug 'supernova'. Dab tsi tseem tshuav tom qab lub supernova tawg yog 'neutron hnub qub ' - lub cev qhuav dej ntawm lub hnub qub - lossis, yog tias muaj qhov loj txaus, lub qhov dub.

Pom zoo:

Yam khoom twg feem ntau txiav txim siab seb lub hnub qub loj lossis lub hnub qub supergiant yuav tsim?

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