In 1665, astronomer Giovanni Domenico Cassini observed a massive storm raging on Jupiter. It became known as the Great Red Spot, a swirling oval of clouds that’s almost twice as wide as Earth.

Jupiter’s iconic Great Red Spot is a massive storm that has swirled within the atmosphere of the largest planet in the solar system for years. But astronomers have debated just how old the vortex ...

The confusion came because various descriptions of a spot on Jupiter have been similar. Cassini’s storm, which he optimistically named the “Permanent Spot,” appeared in the observations of ...

Astronomers concluded it is not the same and that Cassini’s spot disappeared in 1708. ... 1880, drawing of Jupiter by E.L. Trouvelot. (c) November 28, 1881, drawing by T.G. Elger.

The most obvious evidence that Cassini’s spot is not the Great Red Spot is that the drawings of Herschel, Messier, Schroeder and others record nothing like them at the same latitudes in their drawings ...

Jupiter’s Great Red Spot was first discovered in 1665 by astronomer Giovanni Domenico Cassini, and both scientists and the public have been awe-stricken by its beauty and the processes that created it ...

New research reveals that Jupiter's red “Permanent Spot” is actually two spots and neither of them are nearly as long-lasting as previously thought. Knewz.com has discovered that the distant ...

The troubled Cassini probe will resume making scientific observations of Jupiter before flying by the giant planet to conduct joint studies with another spacecraft, NASA said Thursday.

Astronomer Giovanni Cassini drew this image of Jupiter, which shows the Permanent Spot, ... In this drawing from November 1881, the Great Red Spot is fringed by a clear oval.

Jupiter's iconic Great Red Spot has persisted for at least 190 years and is likely a different spot from the one observed by the astronomer Giovanni Domenico Cassini in 1665, a new study reports.

Jupiter’s striking Great Red Spot has puzzled astronomers for years. Now, they think they know just how old it is and how the cyclone formed in Jupiter’s atmosphere.

Jupiter’s striking Great Red Spot has puzzled astronomers for years. Now, they think they know just how old it is and how the cyclone formed in Jupiter’s atmosphere.