Saiyareye Fara-Khorsidi (Exoplanet) [FA]
sayaareyeh faraakhoorshidey iaa sayaareyeh gheyrkhoorshidey (be englisi: Exoplanet iaa Extrasolar Planet) sayaareh-'ee ast ke biroon az manzoomeh khorshidi gharaar daard va be door yek setaareh (gheyr az khorshid) dar haal gardesh ast. nakhostin shenaasaayi 'elmi vojood yek sayaareyeh faraakhoorshidey dar saal 1988 anjaam shod, ba in haal, nakhostin taed dar saal 1992 soorat gereft. az aan be ba'd, va ta aval mh 2017, shomaar sayyaaregaan faraakhoorshidey shenaasaayi-shodeh 3٬608 sayaareh bodeh ke 2٬702 sayaareh dar 610 saamaaneh sayaareh-'ee mokhtalef, taed shodeh-and va in te'daad rooz be rooz dar haal afzaayesh ast. motaaleh sayaareh-haaye faraakhoorshidey jozv mozooaat novin dar daanesh akhtarshenaasi ast va shaamel do shaakheh koli kashf va shakhsiat-pardaazi in-gooneh sayaareh-haa mi-shavad. nakhostin sayaareyeh faraakhoorshidey dar avayel daheh 90 milaadi kashf shod va az saal 2002 afzoon-bar kashf, barresi vijhegi-haaye in sayaareh-haa niz aaghaaz shod. rasadhaaye zamini va fazaayi sayaaraat faraakhoorshidey be do dalil 'omdeh kaar chandaan aasaani nist. nkhost inkeh sayaaraat be-tor koli nesbat be setaaregaan andaazeh-haaye besyar kochaki daarand va sayaaraat faraakhoorshidey dar faaseleh-haaye besyar doori az zamin vaaghe'-and. digar inkeh sayaaraat ba setaareh mizbaan-shaan ekhtelaaf derakhshandegi foogh-al'aadeh ziyaadi daarand. vaabasteh be-no' setaareh, andaazeh va damaaye sayaareh, setaareh mi-tavaand az hodood 1٬000 ta yek milion baraabar porforoogh-tar az sayaareh-haaye piraamoon khod baashad; banaabarin tafkik noor baaztaab-shodeh az sayaareh az noor setaareh besyar moshkel ast. be 'onvan yek tashbih, rasad yek sayaareyeh ghool-peykar maanand moshtari dar madaar nazdik-tarin setaareh-haa be khorshid, maanand in-ast ke dar tehraan beistim va bekhahim sar yek moorcheh, ke dar jazir kish dar haal raah raftan dar kenaar yek noraafkan be sheddat pornoor ast ra moshaahedeh konim! ba vojood tamaam in sakhti-haa, okhtarshenaasaan tavaanesteh-and ravesh-haa va abzaarhaayi baraaye aashkaarsaazi va motaaleh khosoosiaat sayaaraat faraakhoorshidey ebda' konand. taakonoon hodood shosh ravesh aashkaarsaazi yaaft shodeh ke be-estesnaaye yeki, dar baghieh sayaareh be-ravesh gheyrmostaghim barresi mi-shavad.
yek toofaan shadid gerd va ghobaar baraaye nakhostin baar dar sayaareh-'ee biroon az manzoomeh shamsi moshaahedeh shod. in toofaan dar sayaareh faraakhoorshidey mosoom be «VHS 1256b» kashf shod ke hodood 40 saal nori az zamin faaseleh daard. baraaye tahaghogh yaaftan in kashf, be tavaanaayi-haaye ghaabel tavajjoh «teleskop fazaayi jimz veb» (JWST) niyaaz bood.
dar saal 1992 yek setaareh-shenaas lahestaani be naam aleksaandr valastkaan, nakhostin sayaareyeh faraakhoorshidey ra dar piraamoon tap akhtar PSR 1257+12 kashf kard. in kashf sari'an mored taed gharaar gereft va be 'onvan nakhostin kashf sayaareyeh faraakhoorshidey taed shodeh, shenaakhteh shod. sayaareyeh ba'di dar 6 oktobr 1995 tavassot timi be sarparasti mishel maayor az daaneshgaah jhenev, be door setaareh reshteh asli, 51 pegaasoos soorat gereft.
#Exoplanet
