Neptune's Great Cold Spot is darker than Jupiter's Great Red Spot. The storm is like a hurricane, made of ice and cold, fast winds.
The Jupiter is BIG RED SPOT and a storm system
It is though to be a highly stable windstorm.
They are both large, raging storms last for hundreds of years.
None. Saturn has a great white spot, Uranus has a dark spot. However, Neptune has a great dark spot [see related link for a picture] which has been compared to Jupiters great red spot, but it is not red.
one of jupiters features are that it surface is mostly made of hydrogen and helium
2
No, it is a storm, similar to the Great Red Spot on Jupiter.
Voyager 1 and 2 in 1979
3 earths
About 300 years (109,500 days)
The big red spot, which is a giant hurricane in Jupiter's atmosphere and has been going for hundreds of years. If you could travel across the great red spot, it would take your whole life to do so.
It depends where you're looking from. I think its on the bottom left corner.