Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Messier 81 (wanda kuma aka sani da NGC 3031 ko Bode's Galaxy) wani galaxy ne mai tsaka-tsalle kimanin shekaru miliyan 12 mai nisa, tare da diamita na shekaru 90,000, kimanin rabin girman Milky Way, a cikin tauraron Ursa Major. Saboda kusancinsa da Duniya, girmansa, da kwayar halittar galactic mai aiki (wanda ke dauke da ramin baƙar fata na M<unk> miliyan 70), Messier 81 ya yi nazari sosai ta ƙwararrun masanan taurari. Girman galaxy da girman haske kuma ya sa ya zama sanannen manufa ga masu binciken taurari.Messier 81 ya fara gano shi ne daga Johann Elert Bode a ranar 31 ga Disamba, 1774. Sakamakon haka, wani lokacin ana kiran galaxy a matsayin "Bode's Galaxy". A cikin 1779, Pierre Méchain da Charles Messier sun sake gano abin da Bode ya yi, wanda daga baya aka jera a cikin Littafin Messier.  Tambaya: Shekaru nawa ne Messier 81 ke da nisa?
Miliyan 12