Great Red Spot


Great Red Spot

/

Jupiter's Great Red Spot (top right) and the surrounding region. Below the spot is one of the large …—NASA/JPL

Storm on the planet Jupiter that moves in longitude but remains centred at about latitude 22° south. A high-pressure centre, it is oval, measuring about 7,500 mi (12,000 km) north to south, roughly the diameter of Earth, and nearly twice as wide east to west. Its discovery in the 1660s is attributed to Gian Domenico Cassini or Robert Hooke. Its colour, whose cause is unknown, varies from brick-red to brownish; it tends to change colour over a period of years.

This entry comes from Encyclopædia Britannica Concise.
For the full entry on Great Red Spot, visit Britannica.com.

Seen & Heard

What made you look up Great Red Spot? Please tell us what you were reading, watching or discussing that led you here.

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More