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Appearance. hide. Jupiter's swirling clouds, in a true-color image taken during fly-by of the Cassini-Huygens probe on 29th of December 29, 2000. The atmosphere of Jupiter is the largest planetary atmosphere in the Solar System. It is mostly made of molecular hydrogen and helium in roughly solar proportions; other chemical compounds are present ...
Great Red Spot. The Great Red Spot is a persistent high-pressure region in the atmosphere of Jupiter, producing an anticyclonic storm that is the largest in the Solar System. It is the most recognizable feature on Jupiter, owing to its red-orange color whose origin is still unknown.
Three systems are used as frames of reference for tracking planetary rotation, particularly when graphing the motion of atmospheric features. System I applies to latitudes from 7° N to 7° S; its period is the planet's shortest, at 9h 50 m 30.0s. System II applies at latitudes north and south of these; its period is 9h 55 m 40.6s. [136]
Although Saturn's core is considerably denser than water, the average specific density of the planet is 0.69 g/cm 3, because of the atmosphere. Jupiter has 318 times Earth's mass, [40] and Saturn is 95 times Earth's mass. [6] Together, Jupiter and Saturn hold 92% of the total planetary mass in the Solar System. [41]
Extraterrestrial atmosphere. Major features of the Solar System (not to scale) Graphs of escape velocity against surface temperature of some Solar System objects showing which gases are retained. The objects are drawn to scale, and their data points are at the black dots in the middle. The study of extraterrestrial atmospheres is an active ...
Saturn's hexagon. A partial view of Saturn's north pole, 2016. Saturn's hexagon is a persistent approximately hexagonal cloud pattern around the north pole of the planet Saturn, located at about 78°N. [1][2][3] The sides of the hexagon are about 14,500 km (9,000 mi) long, [4][5][6][7] which is about 2,000 km (1,200 mi) longer than the diameter ...
Ganymede, or Jupiter III, is the largest and most massive natural satellite of Jupiter, and in the Solar System. Despite being the only moon in the Solar System with a substantial magnetic field, it is the largest Solar System object without a substantial atmosphere. Like Saturn 's largest moon Titan, it is larger than the planet Mercury, but ...
Jupiter might have shaped the Solar System on its grand tack. In planetary astronomy, the grand tack hypothesis proposes that Jupiter formed at a distance of 3.5 AU from the Sun, then migrated inward to 1.5 AU, before reversing course due to capturing Saturn in an orbital resonance, eventually halting near its current orbit at 5.2 AU.