It’s the most famous storm in the Solar System.
But Nasa fears Jupiter’s Great Red Spot will disappear within 20 years.
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When the Voyager probe zoomed past Jupiter in 1979, the Spot appeared to be twice as large as Earth.
Now Nasa’s Juno probe has found it’s only 30 percent bigger than our nice little blue planet.
‘Nothing lasts forever,’ Juno mission planetary scientist Glenn Orton told Business Insider.
‘In truth, the GRS (Great Red Spot) has been shrinking for a long time.
‘The GRS will in a decade or two become the GRC (Great Red Circle),’ Orton said.
‘Maybe sometime after that the Great Red Memory.’
The 10,000 mile wide Great Red Spot was first seen in 1655 but was only properly observed in 1830.
More: Weird
It is a hellish squall where winds blow much faster than any storms here on Earth, reaching speeds of almost 200 miles per hour.
‘A Category Five hurricane, the strongest class on Earth, has winds raging at more than 155 miles per hour, and they usually max out around 200 miles per hour,’ Nasa wrote.
Last year, Juno swooped close to Jupiter and passed just 5,600 miles above the massive storm system.
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