Lefats'e ke lona feela polanete eo re nang le bonnete ba hore e ka ts'ehetsa mofuta o tsoetseng pele oa mahlale, empa ho se ho fanoe ka tlhokomelo e nyane ho monyetla oa hore, ho feta lilemo tse limilione tse likete tse 4.5, lefats'e la rona le hlahisitse tsoelo-pele e fetang e le 'ngoe e tsoetseng pele.
Setsebi sa boemo ba leholimo Gavin Schmidt, motsamaisi oa NASA's Goddard Institute for Space Study, hammoho le Adam Frank, rasaense oa Univesithi ea Rochester, ba nkile qeto ea ho fuputsa mohopolo ona mme ba ngola hammoho Sehlooho se bitsoa Khopolo-taba ea Silurian: na ho ka khonahala ho fumana tsoelo-pele ea indasteri tlalehong ea jioloji? ”
Poleloana "Silurian" e alimiloe letotong la lipale tsa mahlale tsa Borithane "ngaka mang", e bolelang peiso ea lihahabi e phetseng Lefatšeng limilione tsa lilemo pele ho hlaha sechaba sa rona.
E phatlalalitsoe ho International Journal of Astrobiology, pampiri ena e hlalosa mofuta oa ho saena oo mofuta o nang le boiphihlelo ba mahlale o ka o sieang morao. Schmidt le Frank ba sebelisa lits'oants'o tsa Anthropocene, nako ea hajoale moo mesebetsi ea batho e susumetsang ts'ebetso ea lipolanete, joalo ka maemo a leholimo le mefuta-futa ea limela, e le tataiso ho seo re ka se lebellang ho tsoelo-pele e ngoe.
Ke habohlokoa ho hopola hore meaho efe kapa efe e meholo e senolang e kanna ea lula e bolokiloe ho feta mashome a limilione tsa lilemo tsa ts'ebetso ea jioloji, hona ho sebetsa ho tsoelo-pele ea batho le ho ba tlang pele ho "Silurian" Lefatšeng.
Sebakeng seo, Schmidt le Frank ba etsa tlhahiso ea hore ho batloe lipontšo tse poteletseng, joalo ka lihlahisoa tsa tšebeliso ea mafura, liketsahalo tsa ho timela ha bongata, tšilafalo ea polasetiki, thepa ea maiketsetso, tšitiso ea mobu oa nts'etsopele ea temo kapa ho rengoa ha meru le li-isotopu tse nang le mahlaseli a kotsi tse ka bang teng ka lebaka la libetsa tsa nyutlelie. .
"U tlameha ho qoela masimong a mangata a fapaneng ebe u bokella seo u se bonang," ho boletse Schmidt. “E kenyelletsa chemistry, sedimentology, geology le lintho tsena tse ling kaofela. Hoa hlolla haholo ”, o ile a phaella.
Drake equation
Sengoloa sa boramahlale se hokahanya khopolo-taba ea Silurian le Drake equation, e leng mokhoa o nang le monyetla oa ho hakanya palo ea tsoelo-pele e bohlale Milky Way, e hlahisitsoeng ke setsebi sa linaleli se tummeng Frank Drake ka 1961.
E 'ngoe ea mefuta e meholo ea equation ke nako eo tsoelo-pele e khonang ho fetisetsa lipontšo tse fumanehang. Lebaka le sisintsweng la ho se khone ho kopana le mofuta o sele ke hore nako ena ea nako e ka ba khutšoane haholo, ekaba hobane tsoelo-pele e tsoetseng pele ea mahlale e ikemela kapa hobane ba ithuta ho phela ka mokhoa o ts'oarehang malapeng a bona.
Ho ea ka Schmidt, ho ka etsahala hore nako e fumanehang ea tsoelo-pele e khuts'oane haholo ho feta nako ea eona ea nako e telele, hobane rona, botho, re ke ke ra nka nako e telele ka ho etsa mefuta ea lintho tseo re li etsang. Re emisa hobane re qhekelletse kapa re ithutile ho se.
Leha ho le joalo, ho phatloha ha mesebetsi, litšila le bongata ba lipina ke nako e khuts'oane haholo. Mohlomong e etsahetse makhetlo a limilione tse likete Bokahohleng, empa haeba e ka nka lilemo tse 200 nako le nako, re ne re ke ke ra e hlokomela.
Khopolo-taba ea Silurian
Mohopolo o ts'oanang o sebetsa bakeng sa tsoelo-pele efe kapa efe e fetileng e ka bang e hlahile Lefatšeng, feela hore e oele lithako kapa ho fokotsa mesebetsi e sokelang bophelo ba eona bo sebetsang. Ka sebele ho na le lithuto tse seng joalo tse poteletseng tseo batho ba ka li fumanang tseleng ena e arohaneng eo, ha e le hantle, ke mofuta oa indasteri oa mantra ea khale ea ho iphetola ha lintho: ikamahanya kapa shoa.
Ena, bakeng sa Schmidt le Frank, ke e 'ngoe ea lihlooho tsa mantlha tsa khopolo-taba ea Silurian. Haeba re ka nahana ka monyetla oa hore ha re Matšabana a pele ho hlahisa tsoelo-pele e tsoetseng pele lithutong, mohlomong re ka ananela botebo ba maemo a rona a hona joale
"Mohopolo ka sebaka sa rona Bokahohle e bile hore re ikarole butle ho tloha thutong," ho boletse Schmidt, a qotsa litumelo tse siiloeng ke nako, joalo ka mohlala oa geocentric oa Bokahohle. Ho tšoana le ho ikhula butle-butle ponong ea boithati, 'me khopolo-taba ea Silurian e mpa feela e le tsela e' ngoe ea ho etsa joalo. ”
"Re hloka ho ba le sepheo le ho bulehela mefuta eohle ea menyetla, haeba re ka bona hore na bokahohle bo hlile bo re fa eng," Schmidt o phethile.
