Asteroid Bennu cuam pob zeb rau hauv qhov chaw thiab NASA tsis paub yog vim li cas

Asteroid Bennu cuam pob zeb rau hauv qhov chaw thiab NASA tsis paub yog vim li cas
Asteroid Bennu cuam pob zeb rau hauv qhov chaw thiab NASA tsis paub yog vim li cas
Anonim

Ib lub hnub qub loj loj uas tuaj yeem tsoo ib hnub hauv ntiaj teb hauv qhov kev puas tsuaj loj, zais ntshis tawm pob zeb.

Qhov hu ua "Doomsday" asteroid-Bennu cuam cov pob zeb uas muaj qhov ntev mus rau qhov chaw thiab NASA xav tsis thoob. Bennu poob rau hauv kev tsis txaus ntseeg tom qab tau tshaj tawm "yam khoom txaus ntshai" los ntawm cov kws tshawb fawb hnub qub.

Xyoo tas los, NASA's Osirix-Rex sojntsuam tuaj txog Benn thiab pib ya ncig nws, xa cov duab thiab cov ntaub ntawv mus rau kws tshawb fawb. Thiab cov kws tshawb fawb tau tshawb pom qhov tsis tau xav txog: Bennu los ntawm lub sijhawm "muab pov tseg" cov khoom loj rau hauv qhov chaw.

Tom qab ntawd cov khoom no tau nkag mus hauv Bennu lub hauv paus me me thiab poob rov qab rau nws saum npoo, lossis ya mus rau qhov chaw.

Karl Hergenrother, tus kws saib hnub qub ntawm University of Arizona tau hais tias "Tsis muaj leej twg tau pom ib lub hnub qub qub uas nyob ze ze li no."

Tsis ntev dhau los, qhov kev lees paub feem ntau yog tias lub hnub qub yog lub cev tuag uas tsis hloov pauv."

Qee qhov ntawm cov khoom siv txav ntawm qhov nrawm ntawm 3 meters ib pliag thiab tau tawg thaum lub sijhawm "cov xwm txheej raug tshem tawm".

Qhov loj tshaj plaws ntawm cov xwm txheej no tau tshwm sim thaum Lub Ib Hlis 6, thaum 200 daim tib neeg raug pov tseg. Kev tshawb fawb ntxiv yuav tsum tsim qhov tseeb ua rau tshwm sim no.

Kev sojntsuam Osiris-Rex yog vim yuav tsaws av ntawm Bennu xyoo 2023 txhawm rau khaws cov qauv ua ntej rov qab los rau ntiaj teb.

Lwm qhov xov xwm zoo yog tias thaum Bennu tuaj yeem tsoo peb, nws tsis zoo li.

"Qhov tshwm sim ntawm Bennu tsoo lub ntiaj teb yog qhov tsawg heev (1 hauv 3000), thiab yog tias nws ua, nws yuav nyob hauv 150-200 xyoo," hais tias Dr. Robin Smith, tus kws kho mob ntawm University of Sheffield Hallam.

Thiab los ntawm lub sijhawm ntawd, nws muaj peev xwm heev uas peb yuav tsim riam phom asteroid los cawm peb ntawm qee qhov kev tuag. Txawm li cas los xij, Bennu qhov cuam tshuam yuav ua rau lub ntiaj teb puas tsuaj yog tias qhov no tshwm sim.

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