Jupiter & the Outer Planets
Jupiter & the Outer Planets: science-fiction ideas and the real science behind them, explained in five minutes each.
Great Red Spot
The Great Red Spot is a storm on Jupiter that is wider than Earth and has been watched for about two centuries. It is a …
Jupiter Facts: Size, Moons, Storms and NASA's Juno Mission
Jupiter is the largest planet in the Solar System: a gas giant more than 11 times wider than Earth and heavier than all the other …
Io: Jupiter’s Volcanic Moon
Io is Jupiter’s innermost large moon and the most volcanically active world in the solar system, with more than 400 active volcanoes. Jupiter and its …
Callisto: Jupiter's Ancient Cratered Ice Moon
Callisto is Jupiter's second-largest moon and the third-largest in the Solar System, about as wide as Mercury. Its ancient, crater-packed ice crust has barely changed …
Europa (Moon): Ocean, Ice and the Search for Life
Europa is the smallest of Jupiter's four big moons, a world of cracked ice a little smaller than Earth's Moon. Beneath the ice, most scientists …
Ganymede
Ganymede is the largest moon in the solar system, a world of rock and ice that circles Jupiter every seven days. It is wider than …
Jupiter's Moons
Jupiter has more than 90 known moons, but four dominate: Io, Europa, Ganymede and Callisto, found by Galileo in 1610. Io erupts with volcanoes, Europa …