Dab tsi yog tus qauv rau Drake equation?

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

Thawj kwv yees

R_∗ = 1 xyoo⁻¹ (1 lub hnub qub tsim hauv ib xyoos, nyob rau nruab nrab ntawm lub neej ntawm galaxy; qhov no tau suav tias yog kev saib xyuas) f_p = 0.2 txog 0.5 (ib feem tsib mus rau ib nrab ntawm tag nrho cov hnub qub tsim yuav muaj ntiaj chaw) n_e = 1 txog 5 (hnub qub nrog cov ntiaj chaw yuav muaj nyob nruab nrab ntawm 1 thiab 5 lub ntiaj teb uas muaj peev xwm tsim lub neej)

Kuj paub, qhov sib npaug ntawm Drake suav li cas?

Lawv kev sib npaug , A = N_ast*f_{ua bt}, piav qhia A raws li qhov khoom ntawm Nast - tus naj npawb ntawm cov ntiaj chaw nyob hauv ib lub ntim ntawm lub ntiaj teb - muab faib los ntawm f_{ua bt} - qhov yuav tshwm sim ntawm ib hom kev yees tshwm sim ntawm ib qho ntawm cov ntiaj chaw no. Qhov ntim tau suav tias yog, piv txwv li, tag nrho Lub Ntiaj Teb, lossis tsuas yog peb Galaxy.

Tsis tas li ntawd, Seager equation yog dab tsi? Seager equation Cov kev sib npaug tsom mus rau kev tshawb nrhiav cov ntiaj chaw nrog cov pa roj carbon monoxide, cov roj hluav taws xob tsim los ntawm lub neej uas tuaj yeem sib sau ua ke hauv lub ntiaj teb huab cua mus rau qib uas tuaj yeem kuaj pom nrog cov chaw taws teeb tswj chaw taws teeb.

Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog qhov tseem ceeb ntawm Drake Equation?

Cov lus hais dav dav tab sis ntawm qhov zoo tshaj plaws vaguely paub qhov tseem ceeb rau cov no yam yog: R_* = 10/yr, f_p = 0,5, n_e = 2, f_l = 1, f_i f_c = 0.01, thiab li N = L/10.

Muaj pes tsawg lub ntiaj teb nyob hauv lub ntiaj teb tuaj yeem txhawb nqa txoj sia?

Thaum lub Kaum Ib Hlis 2013, cov kws tshawb fawb astronomers tau tshaj tawm, raws li Kepler qhov chaw lub hom phiaj cov ntaub ntawv, uas muaj ua tau ua as ntau raws li 40 billion lub ntiaj teb loj ntiaj chaw orbiting nyob rau hauv tej thaj chaw ntawm lub hnub zoo li hnub qub thiab liab dwarfs nyob rau hauv lub Milky Way, 11 billion ntawm uas tej zaum yuav orbiting hnub zoo li hnub qub.