What is the Great Dark Spot on Neptune?
Q: What is the Great Dark Spot on Neptune?
A: The Great Dark Spot is a dark spot on Neptune that is similar in appearance to Jupiter's Great Red Spot.
Q: When was the Great Dark Spot discovered?
A: The Great Dark Spot was discovered in 1989 by NASA's Voyager 2 probe.
Q: Is the Great Dark Spot on Neptune similar in appearance to Jupiter's spot?
A: Yes, the Great Dark Spot on Neptune is similar in appearance to Jupiter's Great Red Spot.
Q: What is believed to be the Great Dark Spot on Neptune?
A: It is believed that the Great Dark Spot on Neptune is an atmospheric hole similar to the hole in Earth's ozone layer.
Q: Are the insides of Great Dark Spots mostly cloud-free?
A: Yes, the insides of Great Dark Spots are mostly cloud-free.
Q: How long do Great Dark Spots on Neptune last?
A: The lifetimes of Great Dark Spots on Neptune appear to be much shorter than Jupiter's spot, forming and disappearing once every few years or so.
Q: How often does Neptune appear to spend with a Great Dark Spot?
A: Based on pictures taken by Voyager and since then with the Hubble Space Telescope, Neptune appears to spend a little bit more than half its time with a Great Dark Spot.
