He aha te Astrobiology me tōna hiranga
Ko te whetū koiora te rangahau pūtaiao mō te ora i te ao whānui: tōna takenga mai, tōna whanaketanga, tōna tohatoha, me te āheinga o tōna oranga i tua atu i te Ao. Ahakoa e aro nui ana te koiora ki ngā mea ora i runga i tō tātou ao, ka whānui ake te whetū koiora i te pātai ki tētahi pātai whānui ake: kei te Ao anake te ora, kei te ao whānui rānei ētahi atu momo ora? Hei whakautu i tēnei, ka whakakotahi te whetū koiora i ngā momo mātauranga maha—mai i te koiora, te matū, te ahupūngao, te whenua, te whetū arorangi, ki te pūtaiao aorangi—nā te mea ehara te "ora" i te mea he mea noa iho mō ngā mea ora, engari ko te taiao, te pūngao, te wai, ngā huānga matū, me te wā anō hoki.
He aha te mea e akohia ana e te pūtaiao whetū?
I te nuinga o te wā, e toru ngā pātai nui kei te ngako o te koiora whetū.
Tuatahi, me pēhea te tīmatanga o te ora? Kei te ngana ngā kairangahau ki te mārama ki ngā tukanga matū prebiotic i taea ai te whakaputa i ngā ngota matatini pēnei i ngā waikawa amino, ngā huka, ngā nucleotide, ā, i te mutunga iho, ngā hanganga ka taea te tāruarua. Ko ngā whakamātautau taiwhanga, ngā rangahau meteorite, me te whakatauira matū o te āhuarangi taketake o te Ao he huarahi katoa hei whai i te "tohutao" mō ngā tīmatanga o te ora.
Tuarua, me pēhea te oranga me te tupu o te ora? Kei roto i tēnei ko te rangahau mō ngā rohe o te ora. Ko ngā moroiti tino-whakaaro i runga i te Ao—ko ērā e tupu ana i roto i ngā taiao tino wera, tino tote, tino waikawa, tino makariri, tata kore mārama rānei—he rite tonu ki te whakaaro i te ora i runga i ētahi atu aorangi, i ngā marama rānei. Ka ara ake tētahi atu pātai: me whai tonu te ora i ngā āhuatanga pērā i ērā i runga i te Ao o ēnei rā, kāore rānei he "āhuatanga iti"?
Tuatoru, kei hea pea te ora i tua atu i te Ao? Ka maherehia e te pūtaiao whetū ngā wāhi pea i roto i te pūnaha rā me ngā aorangi (ngā aorangi i waho o te pūnaha rā) e tautoko ana i te ora, i nāianei me ngā aorangi o mua. Ehara i te mea ko te ora atamai anake te mea e aro ana tēnei rapunga engari ko ngā momo ora māmā pērā i ngā moroiti—nā te mea, e ai ki te pūtaiao, he nui ake te tūponotanga me te ngāwari ake o te kimi i te ora moroiti hei "taahiraa tuatahi."
He aha i whakahuatia pinepine ai te wai?
I roto i ngā kōrero maha mō te koiora whetū, he kupu matua te wai wai. Ehara i te mea koinei anake te whakarewa, engari nā te mea ko ngā mea ora katoa e mōhiotia ana e tātou e whakawhirinaki ana ki a ia hei reo mō ngā tauhohenga matū. He āhuatanga ahurei anō hoki tō te wai: ka taea e ia te whakarewa i ngā matū maha, te whakau i ngā pāmahana, me te tautoko i te hanganga o ngā hanganga koiora.
Nō reira, he maha ngā misioni ātea e hangaia ana i runga i te kaupapa "whai i te wai". Hei tauira, ka rangahauhia a Mātaotao mō ngā taunakitanga i mua he awa, he roto, ā, tera pea he moana anō hoki. Hei tāpiri, he maha ngā marama hukapapa, pērā i a Europa (e porowhita ana i a Hūpiter) me Enceladus (e porowhita ana i a Hātūre), e whakaponohia ana kua mahana ake ngā moana o raro i te mata e te wera tai. Mēnā kei reira te wai wai, he pūtake pūngao, me ngā huānga matū e tika ana, ka nui ake te tūponotanga o ngā tukanga koiora.
Te koiora whetū i roto i te pūnaha rā: mai i a Māte ki ngā marama hukapapa
Kua roa a Tāwhirimātea e noho ana hei whāinga matua nā te mea e tata ana ki a ia, me ngā tohu whenua e tohu ana i tētahi hītori mākū ake. Kua rangahauhia e ngā waka rererangi pērā i a Curiosity me Perseverance ngā toka parataiao, ngā kohuke, me ngā matū waro. Ko tā rātou arotahi ko te rapu i ngā tohu o te nohoia me ngā waitohu koiora pea, pērā i ngā tauira matū e uaua ana ki te whakamārama mā ngā tukanga kore-koiora anake.
He rerekē ngā āhuatanga o Europa me Enceladus. Kei Enceladus anō hoki ngā putunga rauemi mai i raro i te whenua ka taea te tātari tata atu. He rite ēnei ki ngā "tauira kore utu" o tētahi moana huna, e tuku ana i te whai wāhi ki te kite i ngā matū waro, ngā tote, me ngā taurite matū pea—he tohu mō ngā pūtake pūngao ka taea e ngā moroiti te whakamahi.
Ko Titan, te marama nui rawa atu o Hātū, kei a ia ngā roto hauwaiwai (methane/ethane) me ngā matū matatini o te āhuarangi. Ahakoa he makariri rawa mō te wai wai i runga i te mata, he taiwhanga taiao a Titan mō te ako i te matū pre-biotic. Ka āwhina i ngā kaipūtaiao ki te mārama ki ngā ara matū e whai pānga ana ki te putanga mai o te ora, ahakoa he rerekē rawa ngā āhua o te ora—mēnā he ora—i ērā o te Ao.
Ngā aorangi-ā-waho me te "rohe nohoia"
I tua atu i te pūnaha rā, kei te tere haere te whanaketanga o te mātauranga whetū nā te kitenga o ngā mano tini o ngā aorangi. Ko tētahi ariā rongonui ko te rohe noho, te tawhiti mai i tētahi whetū ka taea e te wai wai te noho pumau i runga i te mata o tētahi aorangi (mehemea he nui te āhuarangi). Heoi, he tīmatanga noa iho tēnei ariā. Ka whakawhirinaki hoki te noho ki ngā āhuatanga maha: te hanganga o te āhuarangi, te papa aukume, te mahi a ngā whetū, te whenua, te huringa waro, me te noho o te wai.
Ko te mahi e whai ake nei ko te rapu i ngā tohu koiora o te hau. Mā te tirotiro ira, ka ngana ngā kaipūtaiao ki te kite i ngā hau e tohu ana i ngā mahi koiora, pērā i te hāora, te ozone, te methane, ngā huinga hau rānei i roto i te kore taurite matū. Heoi, he nui te wero: ka taea hoki e ngā tukanga matawhenua, whakaahua-matū rānei te whakaputa i ēnei hau. Nō reira, ka tino tupato ngā kaipūtaiao whetū ki te karo i ngā "hua pai teka" me te ngana ki te hanga i ngā rārangi taunakitanga maha i mua i te whakatau whakatau.
He aha te waitohu koiora, ā, he aha i uaua ai?
Ko te waitohu koiora he tohu pea i mahue mai i te ora—he ngota waro, he tauira isotopic, he hanganga moroiti, he hanganga āhuarangi rānei. Ko te raruraru, ka taea hoki e te taiao te "whakaari" i te ora. Hei tauira, ka taea te whakaputa i te methane e ngā moroiti, engari ka taea hoki te puta mai i ngā tukanga whenua pēnei i te serpentinization (te tauhohenga o ngā toka ki te wai). Ka taea te hāora te hua o te photosynthesis, engari i raro i ētahi āhuatanga, ka taea te hanga mā te pakaru o ngā ngota wai mā te irahiko, me te hauwai e tukuna ana ki te wāhi.
Nō reira, kua whakawhanakehia e te koiora whetū tētahi huarahi pakari: te wehewehe i ngā tohu koiora mai i ngā tohu kore-koiora, te whakamātautau i ngā whakapae rerekē, me te whakakotahi i ngā raraunga matawhenua, matū, me te taiao. I roto i te mahi, ko te "kimi i te ora" he tikanga ko te kohikohi taunakitanga tāpiri, ehara i te ine kotahi, tino tika.
Te hiranga o te pūtaiao whetū ki te tangata
Ehara i te mea ko te pūtaiao whetū anake te kaupapa o "ngā manene?" He whānui, he tūturu hoki tōna hiranga.
1. Te mārama ki ō tātou takenga mai. Mā te tirotiro i te putanga mai o te ora i te mea kore-ora, ka hohonu ake tō tātou māramatanga ki te whanaketanga matū me te koiora. Mā tēnei ka āwhina i te whakautu i te pātai matua: he aha ngā whakaritenga iti rawa kia tīmata ai te ora?
2. Te pānga ki te pūtaiao o Papatūānuku me te huringa āhuarangi. Mā te ako i ngā āhuarangi o ētahi atu aorangi ka whakarei ake i tō tātou māramatanga ki ngā whanaketanga āhuarangi, te pānga kati kōtuhi, me te pumau o te āhuarangi. Ko tētahi tauira rongonui ko Hine-tū-rangi, e whakarato ana i tētahi tauira tino nui o te mahana kati kōtuhi. Mā te pūtaiao aorangi me te koiora whetū ka taea te whakataurite i ngā tirohanga hei mārama ki te pūnaha o Papatūānuku.
3. Te akiaki i te auahatanga hangarau. Me whai taputapu iti, tairongo hoki ngā misioni ātea, ka taea te tu atu i ngā āhuatanga tino kino. Ko ngā whanaketanga o ngā pūoko, ngā karetao, ngā ine ira, ngā tikanga whakahoromata, me te tātari raraunga he maha ngā pānga ki te hangarau i runga i te Ao—ahakoa i roto i ngā mara hauora, taiao, ahumahi rānei.
4. Ngā tikanga matatika me te tiaki i ngā aorangi. Mena he tūponotanga kei te ora ngā moroiti i runga i a Mātaotao, i te marama hukapapa rānei, me ārai te mahi a te tangata, a te karetao rānei i te poke. Ka ara ake ngā pātai matatika mā te koiora whetū: me pēhea te tūhura me te kore e kino ki ngā pūnaha rauropi manene (mēnā he mea kei roto), me pēhea te tiaki i a Papatūānuku mai i ngā tauira morearea koiora pea.
5. Ngā tirohanga matatika me ngā tirohanga ahurea. Ko te pātai mō te ora i tua atu i te Ao e pā ana ki te tirohanga a te tangata ki a rātou anō. Ko te kitenga o te ora, tae atu ki te ora moroiti, ko tētahi o ngā kaupapa pūtaiao nui rawa atu i roto i te hītori—ka huri i ngā kōrero mō te ahurei o te Ao, te whanaketanga, me tō tātou tūranga i roto i te ao tūroa.
Te heke mai o te koiora whetū
I ngā tekau tau e haere ake nei, ka nui haere te whakawhirinaki o te koiora whetū ki ngā mahi tahi nui me ngā raraunga maha: ngā karu tiro me ngā āheinga tirotiro koi ake, ngā misioni whakahoki tauira mai i a Tāwhirimātea, te tūhuratanga o ngā marama hukapapa, me te whakatauira rorohiko me te mātauranga horihori hei tātari i ngā tohu waitohu koiora.
Engari kotahi te mea e mau tonu ana: ko te whetūrangi he pūtaiao o ngā mea ka taea. Ka whakatere i te rohe i waenga i "ngā mea e mōhiotia ana e tātou" me "ngā mea ka taea pea," me te nui o te kaha pūtaiao. Ahakoa kāore anō kia kitea e tātou te ora i tua atu o te Ao, he mea nui tonu te whetūrangi nā te mea ka whakarei ake i tō tātou māramatanga ki te ora tonu—me pēhea tōna putanga mai, me pēhea tōna mau tonu, me te whānui o ōna mea ka taea i roto i te ao whānui.
Hei whakamutunga, e whakaako ana te mātauranga whetū ko te ora ehara i te mea he āhuatanga koiora noa iho, engari he āhuatanga ao whānui anō hoki: e hono ana ki ngā toka, ki te wai, ki ngā whetū, ki te matū, me te whānuitanga o te wā. Nā tēnei, ko te ako i tēnei mea he huarahi ki te mārama ehara i te mea ko ngā rangi anake engari ko ō tātou takenga mai me te heke mai ki runga i te Ao.
