Lub hnub qub me tshaj yog dab tsi?
Lub hnub qub me tshaj yog dab tsi?

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Video: Lub hnub qub me tshaj yog dab tsi?
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Lub hnub qub me tshaj plaws tam sim no yog OGLE-TR-122b , lub hnub qub dwarf liab uas yog ib feem ntawm binary stellar system. Qhov no liab dwarf lub hnub qub me tshaj plaws puas tau muaj nws lub vojvoog ntsuas kom raug; 0.12 hnub ci radii. Qhov no ua haujlwm yog 167,000 km. Qhov ntawd tsuas yog 20% loj dua Jupiter.

Yog li ntawd, lub hnub qub me hu ua dab tsi?

Teb thiab piav qhia: Qhov tsawg tshaj plaws hnub qub yog hu ua me me liab dwarfs. Liab dwarfs yog cov feem ntau pom hnub qub nyob ze lub ntiaj teb. Astronomers tau txiav txim siab tias txog 2/3 ntawm tag nrho cov hnub qub nyob ib ncig ntawm lub ntiaj teb yog liab dwarf hnub qub . Qhov no suav nrog Proxima Centauri, uas yog qhov ze tshaj plaws hnub qub rau ntiaj teb.

Kuj Paub, kub npaum li cas yog lub hnub qub me tshaj? Raws li qee qhov kev kwv yees, cov dwarfs liab ua rau peb-quarters ntawm hnub qub hauv Milky Way. Qhov txias tshaj plaws liab dwarfs nyob ze lub hnub muaj qhov kub thiab txias ntawm ~ 2,000 K thiab qhov tsawg tshaj plaws muaj radii ntawm ~ 9% ntawm lub hnub, nrog masses txog ~ 7.5% ntawm lub hnub.

Ib yam li ntawd, Sun puas yog lub hnub qub me tshaj plaws?

Cov tsawg tshaj plaws paub hnub qub OGLE-TR-122b, tsuas yog 20% loj dua Jupiter thiab 100 npaug loj dua (Cov. Hnub yog 1000 npaug loj dua). Cov Hnub feem ntau portrayed li insignificant, tab sis nws yog tiag tiag zoo nkauj loj los ntawm hnub qub qauv.

Cov hnub qub me me tuaj yeem tau txais li cas?

Thaum hais lus ntawm American Astronomical Society lub rooj sib tham 222nd, Todd Henry - tus xibfwb ntawm Astronomy ntawm Georgia State University - tau qhia tias lub hnub qub tau ua no me me tshaj li 8.7 feem pua ntawm txoj kab uas hla ntawm peb lub hnub kom txhawb nqa kev sib txuas ntawm nuclear.

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