Jupiter

Churning seas beneath the icy surface of Jupiter's moon Europa might explain the chaotic jumble of cracks and ridges around its equator, scientists say.

Forty years ago this week, NASA's Pioneer 10 probe beamed the first up-close images of Jupiter back to Earth.

Io is the most volcanically active object in the solar system, dissipating its massive stores of internal heat via intense eruptions.

Mars was formed from smaller pieces of rock than those that formed Jupiter, a new study concludes.

Hydrogen peroxide could be an energy source for life, if it exists in Europa's underground ocean.

The hundreds of volcanoes on Io are farther east than they're supposed to be.

Though Jupiter is shrouded in swirling clouds, its atmosphere has some mysterious clear patches that scientists call 'hot spots.'

The celestial duo will dance together Sunday evening.

Europa's ocean seems to have contact with the surface, making all sorts of chemical reactions possible.