 <translate> Quoc: While in the neighborhood of Neptune, Voyager 2 discovered the "Great Dark Spot", which has since disappeared, according to observations by the Hubble Space Telescope. Originally thought to be a large cloud itself, the "Great Dark Spot" was later hypothesized to be a hole in the visible cloud deck of Neptune.

Answer this question based on the passage: what did the voyager 2 discover about neptune?
HW Chung: OK, some thoughts: <yor> Quoc: Nígbà tí Voyager 2 wà nítòsí Neptune, ó ṣàwárí "Great Dark Spot", èyí tó ti pòórá látìgbà náà, gẹ́gẹ́ bí ohun tí wọ́n fi awò awò awọ̀run Hubble Space Telescope rí. Ní ìbẹ̀rẹ̀, wọ́n gbà pé àwọsánmà ńlá kan ni "Great Dark Spot" fúnra rẹ̀, àmọ́ nígbà tó yá, wọ́n sọ pé ńṣe ló dà bí ihò tó wà nínú àwọsánmà tó wà lójú sánmà Neptune.  Dáhùn ìbéèrè yìí ní ìbámu pẹ̀lú àyọkà náà: kí ni Voyager 2 ṣàwárí nípa Neptune? HW Chung: Ó dáa, àwọn èrò kan: 