What Is the Great Red Spot On the Planet Jupiter and When Was the Great Red Spot On Jupiter First Discovered?

Since the seventeenth century, observers have seen a huge, oval red spot south of Jupiter’s equator.

The Great Red Spot has a greater surface area than Earth: 8,400 miles (13,440 km) wide by 24,000 miles (38,400 km) long.

Scientists have determined that the spot is a huge atmospheric storm.

It appears as a hollow, or depression, in Jupiter’s cloud cover and is reminiscent of a spiraling cyclone viewed from above.

The red spot whirls around itself in a counterclockwise movement, taking 9 days at its center and 12 days at its edge to complete one rotation.

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

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