The Great Red Spot is thought to be a hurricane which has been raging on Jupiter for at least 400 years. The connected page shows an image of the Great Red Spot next to Tropical Storm Emily for comparison.
The Galileo spacecraft photographed volcanoes on the surface of Io, one of Jupiter's moons. Scientists believe there are at least 300 volcanoes on the moon. These volcanoes are somewhat different than...more
Jupiter is the largest planet in our solar system. It is also one of the brighter objects in the night sky. No one knows for sure who discovered Jupiter, but we know the ancient Greeks named him after...more
The rare arrangement of planets Jupiter, Saturn, Uranus, and Neptune in the 1980's made it possible for the Voyager spacecrafts to visit them over a 12 year span instead of the normal 30. They used gravity...more
Saturn's South Pole is very stormy. It is also surprisingly warm. A huge, hurricane-like storm is centered on the South Pole. Astronomers recently discovered that the pole is also warmer than any other...more
The giant planets have definitely changed since their formation. But how much remains to be seen. Most of the original air of the giant planets remains in place. (The earth-like planets lost most of their...more
The mesosphere of Jupiter is a region of balance between warming and cooling. That essentially means that nothing happens there. Except for diffusion, the atmosphere is still. Upper reaches of the atmosphere,...more
As on Earth, the atmosphere of Jupiter consists of a troposphere, stratosphere, mesosphere, and thermosphere. The troposphere is the region where the visible clouds are to be found. The stratosphere, as...more