IMercury (iplanethi)

I-Mercury yiplanethi yokuqala evela kwiLanga kunye neplanethi encinci kwi- Solar System. Yiplanethi esemhlabeni enemingxuma enkulu ngenxa yesijikelezi-langa esingenamsebenzi wejoloji kunye nomoya onzima kakhulu (obizwa ngokuba yi- exosphere ). Ngaphandle kokuba yeyona planethi incinci kwiSolar System enobubanzi obuyi-, i-38% yoMhlaba, iMercury ixinene ngokwaneleyo ukuba inomxhuzulane olingana nomphezulu weMars.

Ngokweethiyori zangoku, iMercury inokuba noqweqwe oluqinileyo lwe-silicate kunye nengubo yokwaleka engaphezulu kombindi oqinileyo wangaphandle, umaleko onzulu wolwelo, kunye nombindi oqinileyo wangaphakathi. Ekubeni iphantse ingabinawo umoya wokugcina ubushushu, iMercury inamaqondo obushushu angaphezulu atshintsha ngokugqithisileyo emini, ukusuka kwi  . ebusuku ukuya kuma-  ngexesha lokukhanya kwelanga kwingingqi ye-ikhweyitha .  Kwi-Mercury's poles nangona kunjalo, kukho amachibi amakhulu omkhenkce amanzi angazange abekwe lilanga elithe ngqo, anobunzima obuqikelelwayo obumalunga ne-0.025–0.25% yomkhenkce weAntarctic.  Zininzi iingqikelelo ezikhuphisanayo malunga nemvelaphi kunye nophuhliso lweMercury, ezinye zazo ezibandakanya ukungqubana neplanetesimal kunye nomphunga wamatye. 

Ngenxa yokuba iMercury isondele kakhulu kwiLanga, ubukhulu bokukhanya kwelanga kumphezulu wayo buphakathi kwe-4.59 kunye ne-10.61 amaxesha elanga lelanga (isixa samandla eLanga afunyenwe kwiyunithi ye-astronomical 1, ephantse ibe ngumgama phakathi koMhlaba neLanga). I-Mercury ijikeleza iLanga ngo-3:2 spin–orbit resonance, okuthetha ukuba xa ithelekiswa neenkwenkwezi ezingasemva, ijikeleza kwi-axis yayo kanye kathathu kwimijikelo emibini nganye eyenzayo ukujikeleza iLanga.  Ngokuchaseneyo, ngenxa yokujikeleza okucothayo kweMercury, umntu obukeleyo kwiplanethi wayeya kubona usuku olunye lwe-Mercurian solar (iintsuku ezili-176 zomhlaba) rhoqo kwiminyaka emibini yelanga yeMercurian (iintsuku ezingama-88 zomhlaba nganye).  I-Mercury's axis ineyona ndawo incinci yokuthambeka kuyo nayiphi na iplanethi yeSolar System (malunga  yesidanga), kunye ne -orbital eccentricity yayo yeyona inkulu kuzo zonke iiplanethi ezaziwayo kwiSolar System. 

NjengoVenus, iMercury ijikeleza iLanga ngaphakathi kwi-orbit yomhlaba, yenza ukuba ibonakale esibhakabhakeni soMhlaba kuphela "njengenkwenkwezi yasekuseni" okanye "inkwenkwezi yangokuhlwa" esondele kakhulu kwiLanga. NgesiNgesi, ithiywe ngothixo waseRoma  ( Mercury ), uthixo wezorhwebo, unxibelelwano kunye nomthunywa woothixo. IMercury yeyona planethi inzima ukufikelela eMhlabeni kuba ifuna olona tshintsho lukhulu kwisantya sesiphekepheke . Zimbini kuphela iziphekepheke eziye zandwendwela iMercury ukusukela ngo-2023: yabhabha ngo-1974 nango-1975, kwaye uMESSENGER yasungulwa ngo-2004 yaza yajikeleza iMercury izihlandlo ezingama-4,000 kwiminyaka emine. Isiphekepheke se-BepiColombo sicwangciselwe ukuba sifike okokugqibela e-Mercury ngo-2025, kwaye emva koko siya kufaka ii-orbiters ezimbini.
 Imithombo