He aha nā asteroids

asteroid ma ke ao holoʻokoʻa

Ua kamaʻilio pinepine ʻia nā meteorite a me nā asteroids i ka astronomy. He nui ka poʻe i kanalua e pili ana i ka ʻokoʻa ma waena o lākou a me he aha nā asteroids ʻOiaʻiʻo. No ka hoʻomaopopo piha ʻana i nā hiʻohiʻona āpau o kā mākou ʻōnaehana solar, pono e ʻike i ke ʻano o nā asteroids.

No kēia kumu, e hoʻolaʻa mākou i kēia ʻatikala e haʻi iā ʻoe i ke ʻano o nā asteroids, he aha ko lākou ʻano, ke kumu a me ka pōʻino.

He aha nā asteroids

he aha nā asteroids

ʻO nā Asteroids nā pōhaku ākea i ʻoi aku ka liʻiliʻi ma mua o nā hōkūhele a kaʻapuni i ka lā ma nā orbit elliptic me nā miliona o nā asteroids, ʻO ka hapa nui o lākou i ka mea i kapa ʻia ʻo "asteroid belt". Hoʻokaʻawale ʻia ke koena ma nā ʻōpuni o nā hōkūhele ʻē aʻe o ka ʻōnaehana solar, me ka Honua.

ʻO Asteroids ke kumuhana o ka noiʻi mau ma muli o ko lākou kokoke i ka Honua. ʻOiai ua hōʻea lākou i ko mākou honua i ka wā ma mua, haʻahaʻa loa ka hopena o ka hopena. ʻO ka ʻoiaʻiʻo, manaʻo nui nā ʻepekema i ka make ʻana o nā dinosaur i kahi hopena asteroid.

ʻO ka inoa asteroid mai ka huaʻōlelo Helene ʻo ia hoʻi "hōkū kiʻi," e pili ana i ko lākou helehelena no ka mea ua like lākou me nā hōkū ke nānā ʻia ma ke kelepona ma ka Honua. I ka hapa nui o ke kenekulia XNUMX, Ua kapa ʻia ʻo Asteroids "planetoids" a i ʻole "dwarf planets."

Ua hāʻule kekahi ma ko mākou honua. Ke komo lākou i ka lewa, ʻā lākou a lilo i meteorites. ʻO nā asteroids nui loa i kapa ʻia i kekahi manawa he asteroids. He mau hoa pili kekahi. ʻO Ceres ka asteroid nui loa, me ka aneane 1.000 kilomika ke anawaena. I ka makahiki 2006, ua wehewehe ka International Astronomical Union (IAU) iā ia ma ke ʻano he honua dwarf e like me Pluto. A laila ʻo Vesta lāua ʻo Pallas, 525 km. Ua loaʻa he ʻumikūmāono ma luna o 240 km, a he nui nā mea liʻiliʻi.

ʻOi aku ka liʻiliʻi o ka hui pū ʻana o nā asteroid a pau i ka ʻōnaehana solar ma mua o ka mahina. ʻO nā mea nui loa he poʻe pōʻai, akā ʻo nā mea i emi iho ma mua o 160 mau mile ke anawaena, ua lōʻihi nā ʻano like ʻole. ʻO ka hapa nui o nā kānaka pono lākou ma waena o 5 a me 20 mau hola e hoʻopau i hoʻokahi kipi ma ke axis.

He kakaikahi ka poʻe ʻepekema e noʻonoʻo nei i nā asteroids ma ke ʻano he koena o nā honua i luku ʻia. Loaʻa paha, noho lākou i kahi o ka ʻōnaehana solar kahi i hana ʻia ai kahi honua nui, ʻaʻole ma muli o ka mana luku o Jupiter.

Origen

Manaʻo ke kuhiakau he koena o nā ao o ke kinoea a me ka lepo i hoʻopaʻa ʻia i ka wā i hoʻokumu ʻia ai ka Lā a me ka Honua ma kahi o ʻelima miliona mau makahiki i hala. ʻO kekahi o nā mea o kēlā ao i hōʻuluʻulu ʻia i waenakonu, a lilo i kumu i hana i ka lā.

ʻO ke koena o nā mea e hoʻopuni ana i ka nucleus hou, e hana ana i nā ʻāpana o nā nui like ʻole i kapa ʻia ʻo "asteroids." Hele mai kēia mai nā ʻāpana o ka mea ʻaʻole lākou i hoʻokomo ʻia i loko o ka lā a i ʻole nā ​​hōkū o ka ʻōnaehana solar.

ʻano asteroid

nā ʻano asteroids

Hoʻokaʻawale ʻia nā Asteroids i ʻekolu pūʻulu e pili ana i ko lākou wahi a me ke ʻano o ka hui ʻana:

  • Asteroids i ke kāʻei. ʻO ia nā mea i loaʻa ma ka lewa a i ʻole ka palena palena ma waena o Mars a me Jupiter. Aia kēia kāʻei i ka hapa nui o nā mea i loko o ka ʻōnaehana solar.
  • centaur asteroid. ʻO lākou ka poʻe ma nā palena ma waena o Jupiter a me Saturn a ma waena o Uranus a i ʻole Neptune.
  • trojan asteroid. ʻO ia ka poʻe e kaʻana like i nā ʻōpuni honua akā ʻaʻole i hoʻololi ʻia.

Ua māhele ʻia ka poʻe kokoke loa i ko kākou honua i ʻekolu mau ʻāpana:

  • Aloha Asteroids. ʻO lākou ka poʻe e hele ana ma ka orbit o Mars.
  • Apollo asteroids. No laila, he hoʻoweliweli pili ka poʻe e hele ana i ka ʻōpuni o ka Honua (ʻoiai he haʻahaʻa ka hopena o ka hopena).
  • Aten asteroids. ʻO kēlā mau ʻāpana e hele ana ma ka ʻōpuni o ka Honua.

Nā kuhikuhi nui

he aha nā asteroids ma ka lewa

Hōʻike ʻia nā Asteroids e ka umekaumaha nāwaliwali loa, kahi e pale ai iā lākou mai ka spherical maikaʻi loa. Hiki ke ʻokoʻa ko lākou anawaena mai kekahi mau mika a hiki i nā haneli kilomika.

Hoʻokumu ʻia lākou me nā metala a me nā pōhaku (ka pālolo, ka pōhaku silicate a me ka hao nickel-iron) i nā ʻano like ʻole e like me kēlā me kēia ʻano o ke kino lani. ʻAʻohe o lākou lewa a hoʻokahi mahina paha kekahi.

Mai ka ili o ka Honua, ʻike ʻia nā asteroids me he mau kiko liʻiliʻi o ka mālamalama e like me nā hōkū. Ma muli o kona liʻiliʻi a me ka mamao loa mai ka Honua. Ua hoʻokumu ʻia kona ʻike ma ka astrometry a me ka radiometry, nā ʻōkuhi māmā a me ka spectroscopy absorption (nā helu hoku e hiki ai iā mākou ke hoʻomaopopo i ka nui o ka ʻōnaehana solar).

He aha ka like o nā asteroids a me nā comets, ʻo ia nā kino lani e ʻōpuni i ka lā, e hele pinepine i nā ala maʻamau (e like me ka hoʻokokoke ʻana i ka lā a i ʻole nā ​​hōkū ʻē aʻe), a he koena o nā mea i hoʻokumu i ka ʻōnaehana solar.

Eia naʻe, ʻOkoʻa lākou i ka haku ʻia ʻana o nā comets me ka lepo a me ke kinoea, a me nā hua hau.. ʻIke ʻia ʻo Comets no nā huelo a i ʻole nā ​​alahele a lākou e haʻalele ai, ʻoiai ʻaʻole lākou e haʻalele mau i ke ala.

No ka loaʻa ʻana o ka hau, ʻokoʻa ko lākou kūlana a me ko lākou helehelena ma muli o ko lākou mamao mai ka lā: e anuanu a pōʻeleʻele ke mamao lākou mai ka lā, a i ʻole e mahana lākou a kipaku aku i ka lepo a me ke kinoea (no laila ke kumu o ka hau. contrail). Kokoke i ka lā Ua manaʻo ʻia ua waiho nā Comets i ka wai a me nā mea hoʻohui kino ʻē aʻe ma ka Honua i ka wā i hana mua ʻia ai.

ʻElua ʻano lupe:

  • wā pōkole. He 200 makahiki ka lōʻihi o ka hele ʻana a puni ka lā.
  • wā lōʻihi. ʻO nā comets e hana i nā orbit lōʻihi a hiki ʻole ke ʻike ʻia. Hiki iā lākou ke lawe i 30 miliona mau makahiki e hoʻopau i hoʻokahi orbit a puni ka lā.

Kāʻei asteroid

ʻO ke kāʻei asteroid kahi hui a kokoke paha o kekahi mau kino lani i māhele ʻia ma ke ʻano o ke apo (a i ʻole ke kāʻei), aia ma waena o nā palena o Mars a me Jupiter. Ua manaʻo ʻia aia ma kahi o ʻelua haneli asteroids nui (he haneli kilomika ke anawaena) a kokoke i hoʻokahi miliona mau asteroids liʻiliʻi (hoʻokahi kilomita ke anawaena). Ma muli o ka nui o ka asteroid, ʻehā i ʻike ʻia he mau mea kū:

  • ʻO Ceres. ʻO ia ka mea nui loa ma ke kāʻei a ʻo ia wale nō ka mea kokoke loa i ka manaʻo ʻia he honua ma muli o kona ʻano spherical i wehewehe maikaʻi ʻia.
  • ʻO Vesta. ʻO ia ka lua asteroid nui loa ma ke kāʻei a ʻo ka asteroid nui loa a paʻa. He poepoe palahalaha kona ano.
  • Pallas. ʻO ia ke kolu o ka nui o nā kāʻei a he ala sloped iki, kahi mea kūikawā no kona nui.
  • Hygia. ʻO ia ka hā o ka nui loa ma ke kāʻei, me ke anawaena o ʻehā haneli kilomika. He pōʻeleʻele kona ʻili a paʻakikī ke heluhelu.

Manaʻo wau me kēia ʻike hiki iā ʻoe ke aʻo hou e pili ana i ke ʻano o nā asteroids a me ko lākou mau ʻano.


Hoʻopili ka ʻike o ka ʻatikala i kā mākou kumumanaʻo o ka hoʻoponopono hoʻoponopono. E hōʻike i kahi kaomi hemahema ʻaneʻi.

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  1. He kuleana no ka ʻikepili: Miguel Ángel Gatón
  2. Ke kumu o ka ʻikepili: kaohi SPAM, hoʻokele ʻōlelo.
  3. Legitimation: Kou ʻae
  4. Ka kamaʻilio ʻana o ka ʻikepili: ʻaʻole e hōʻike ʻia ka ʻikepili i nā ʻaoʻao ʻekolu koe ka mana o ke kānāwai.
  5. Pūnaewele mālama: Pūnaewele i mālama ʻia e Occentus Networks (EU)
  6. Nā Kuleana: I kēlā me kēia manawa hiki iā ʻoe ke palena, hoʻōla a kāpae i kāu ʻike.