"What makes the event even more extraordinary is that it did not involve a single volcano, but multiple active sources." ...

Using data gathered by NASA's Juno Jupiter orbiter, scientists estimate that Europa's ice shell is about 18 miles thick — ...

February’s night skies hold a certain celestial splendor that only enthusiastic and vigorous skywatchers have the fortitude and good fortune to enjoy.

NASA Juno mission captured amazing new imagery of Jupiter's moon Europa. The spacecraft flew about 219 miles (352 kilometers) ...

The volcanic hot spot is larger than Lake Superior, spewing eruptions six times the total energy of all of the world's power plants.

Research into Jupiter’s moons shows Io and Europa did not evolve apart but formed with opposite compositions from the beginning.

Jupiter and Saturn host strikingly different polar storms, despite being similar giant planets, and scientists have long wondered why. New simulations suggest the answer may lie deep below the clouds.

While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...

A historic mission to Jupiter is about to blast off. The European Space Agency’s spacecraft nicknamed Juice—for Jupiter Icy Moons Explorer—is set to begin an eight-year journey toward the planet and ...

Over the years, passing spacecraft have observed mystifying weather patterns at the poles of Jupiter and Saturn. The two ...