- What is the Great Red Spot on Jupiter? The Great Red Spot is a huge elliptical-shaped anticyclone — a long-lasting area of high pressure on Jupiter that creates a persistent storm.
- How long will Jupiter's Great Red Spot last? No one knows for sure. Some research has hypothesized that the spot could disappear in a few decades, but because researchers don't fully understand how and why the spot is changing, it may also last for much longer, possibly many centuries.
- How old is Jupiter's Great Red Spot? It is at least 150 years old and likely much older. It's difficult to confirm if observations in the 17th century were of the same spot we know today, but if they were, the spot would be at least 360 years old, and it's possible it is even older.
Here are some additional facts about Jupiter's Great Red Spot :
- Size: The Great Red Spot is approximately 10,159 miles (16,350 kilometers) wide, which is about 1.3 times the width of Earth.
- Color: The Great Red Spot is generally reddish in color, but it can vary in color from year to year from salmon-red to gray.
- Shape: The Great Red Spot is slightly oval in shape and has been becoming more circular since 2012.
- Location: The Great Red Spot is located in Jupiter's Southern Hemisphere and remains centred at about latitude 22° S.
- Wind speed: The wind speed at the periphery of the Great Red Spot is approximately 250 miles per hour.
- Rotation: The entire system rotates counterclockwise with a period of about seven days.
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