The Great Dark Spot on Neptune, photographed by Voyager 2 during its flyby of the planet, is considered to be a
A) region of upwelling gas in Neptune's atmosphere, above a hot spot on its surface, possibly a volcano.
B) storm system probably centuries old, like Jupiter's Great Red Spot.
C) volcanic caldera.
D) relatively short-lived storm system.

Question

Quizplus · Accepted Answer

The Great Dark Spot on Neptune is a relatively short-lived storm system, unlike Jupiter's Great Red Spot which is centuries old. The Great Dark Spot was not visible in images taken by the Hubble Space Telescope in 1994, indicating its temporary nature.

The Great Dark Spot on Neptune, Photographed by Voyager 2