Jupiter great red spot

Jupiter's Great Red Spot is a persistent anticyclonic storm, larger than Earth, observed for centuries on the gas giant.

About this subject

Jupiter's Great Red Spot is one of the most iconic features in the Solar System. It is a persistent high-pressure anticyclonic storm located in the planet's southern hemisphere, observed for at least 350 years. Telescopic records from the 17th century, such as those by Giovanni Cassini in 1665, describe a similar spot, possibly the same storm. The reddish coloration, which varies in intensity, is not fully explained, but it is believed that compounds like phosphorus, sulfur, or hydrocarbons react to solar ultraviolet radiation. The storm is enormous: its current dimensions (about 16,000 km wide) could engulf the entire Earth, though it is slowly shrinking. Observations from NASA's Juno spacecraft have revealed that the spot extends hundreds of kilometers below the cloud tops, with winds exceeding 600 km/h. Scientists continue to monitor its evolution, as changes in size and shape suggest complex dynamics in Jupiter's atmosphere.

Frequently Asked Questions

Why is the Great Red Spot red?

The exact color is still debated, but the most accepted hypothesis involves chemical compounds (like ammonia, phosphorus, and hydrocarbons) interacting with solar ultraviolet radiation, creating reddish molecules.

Is the Great Red Spot shrinking?

Yes. Historical observations show that the spot has decreased in size over the past decades, from about 40,000 km wide in the 19th century to approximately 16,000 km today.

How long will the Great Red Spot last?

It is uncertain, but models suggest the storm may dissipate in a few decades or centuries, though it remains an extremely stable system.