Mbara ala ọzọ

[1]Exoplanet ma ọ bụ extrasolar mbara ala bụ mbara ala na-ahụ ahụmahụ .  Edere ihe mbụ nwere ike ime nke exoplanet na 1917 ma a mataghị ya dị ka nke ahụ.  [1] Nkwenye mbụ nke akara ahụ mere na 1992. nwere dị iche, nke njikọ na mbụ na 1988, akwụkwọ na 2003. As of 1 December 2023, there are 5,550 confirm exoplanets in 4,089 [2] A na-atụ anya na James  Webb Space Telescope (JWST) ga- ndị mgbasa ozi ndị ọzọ exoplanets, yana ọtụtụ ihe gbasara exoplanets, ndị na-ekiri ihe, ebe gburugburu ebe obibi na ikike nke ndụ.

Time-lapse of exoplanets orbit motion
Exoplanets anọ na-agbagharị na elekere elekere na ndị ọbịa ha ( HR 8799 ).  7-10 ka ihe oyiyi ihe oyiyi awụ iri, yana iji kọmputa na-akọwa.

. [2]Enwere ọtụtụ ụzọ ụzọ ụzọ exoplanets .  Transit photometry na Doppler spectroscopy mgbasala ihe, ma ụzọ ndị a na-ata mgbochi site na nhụsianya doro anya na-akwado nke mbara ala dị nso na US;  Ya mere, 85% nke exoplanets ọdụ nọ n'ime mpaghara ajụjụ tidal .  [1] N'ọtụtụ ọnọdụ, a hụla ọtụtụ mbara ala gburugburu .  [2] Ihe dị ka 1 n'ime 5 Ozi ndị yiri ndị yiri [lower-alpha 1] nwere "amaka -sized" [lower-alpha 2] na mpaghara ebe obibi .  [lower-alpha 3] [3] [4] A na-eche na e nwere ikike 200 na Milky Way, [lower-alpha 4] ekiri ike iche na e nwere ekpuchi mbara ụwa 11 nwere ike ibi na mbara ala Milky Way.  , na-arrị elu ruo ihie 40 ma ọ bụrụ na a na-akpọ mbara ala ala ndị na-agba gburugburu ọtụtụ dwarfs uhie uhie

Nke kacha nta nnukwu exoplanet mara bụ Draugr (nke a dị ka PSR B1257+12 A ma ọ bụ PSR B1257+12 b), nke dị ihe dị ka okpukpu abụọ nke ụnwanyị .  Exoplanet kasị ukwuu e depụtara na NASA Exoplanet Archive bụ HR 2562 b, [1] [2] [3] ihe dị ka okpukpu 30 nke Jupita .  Otú ọ dị, dịka dịka ụfọdụ nke mbara ala si dị (dabere na ụlọ ọrụ nke deuterium [4] ), ọ dị oke ibu ibu ala ma nwee ike ịbụ dwarf aja aja kama.  Oge orbital amara maka exoplanets iche site iche na ihe na-mgbo otu elekere (maka ndị kacha nso na uwe ha) ruo ọtụtụ puku afọ.  Ụfọdụ exoplanets dị nnọọ anya site na ọtụtụ nke na ọ na-siri ike ike ma ọ na-ekedo ike ndò na ya.

  1. O'Callaghan. "JWST Heralds a New Dawn for Exoplanet Science – The James Webb Space Telescope is opening an exciting new chapter in the study of exoplanets and the search for life beyond Earth", Scientific American, 23 January 2023. Retrieved on 23 January 2023.
  2. Khan. "Milky Way may host billions of Earth-size planets", Los Angeles Times, 4 November 2013. Retrieved on 5 November 2013.