Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Tafiya: Bayan gyarawa a tsakiyar hanya a shekara ta 1987, Voyager 2 ta fi kusa da Neptune a ranar 25 ga Agusta, 1989. Ta hanyar maimaita gwaje-gwaje na kwamfuta na kwatancen hanyoyin ta hanyar tsarin Neptunian da aka gudanar a gaba, masu kula da jirgin sun ƙayyade hanya mafi kyau don jagorantar Voyager 2 ta hanyar tsarin Neptune-Triton. Tun da jirgin saman Triton na kewaye yana da mahimmanci game da jirgin sama na ecliptic, ta hanyar gyaran tsakiyar hanya, Voyager 2 an tura shi zuwa hanyar da ke da nisan kilomita 4950 (3000 mi) sama da arewacin arewacin Neptune. Sa'o'i biyar bayan Voyager 2 ya yi kusa da Neptune, ya yi kusa da Triton, mafi girma daga cikin watannin Neptune guda biyu da aka sani, yana wucewa cikin kimanin kilomita 40,000 (25,000 mi). Voyager 2 ya gano zoben Neptunian da ba a sani ba, kuma ya tabbatar da sabbin watannin shida: Despina, Galatea, Larissa, Proteus, Naiad da Thalassa. Yayin da yake cikin unguwar Neptune, Voyager 2 ya gano "Babban Dark Spot", wanda ya ɓace tun daga lokacin, bisa ga lura da Hubble Space Telescope. Daga baya aka yi tunanin Babban Duhu ya zama yanki na gas mai tsabta, yana samar da taga a cikin girgijen methane mai tsayi na duniyar. Tare da shawarar Tarayyar Astronomical ta Duniya don sake rarraba Pluto a matsayin tauraron dan adam a shekara ta 2006, jirgin sama na Neptune ta Voyager 2 a 1989 ya zama lokacin da kowane duniyar da aka sani a cikin Hasken rana ya ziyarci aƙalla sau ɗaya ta hanyar binciken sararin samaniya.  Tambaya: Yaushe ne Voyager 2 ta zo kusa da Neptune?
25 ga Agusta, 1989