New data from NASA's Juno orbiter, launched in 2011 in Florida, reveals Jupiter is slightly smaller than astronomers previously believed.

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

When you buy through links on our articles, Future and its syndication partners may earn a commission. Jupiter’s moon Io is the most volcanically active world in the solar system. This ...

Jupiter’s volcanic moon has always felt like a place that tests your sense of what a world can be. Its surface glows with hundreds of active hot spots. Its mountains rise higher than Everest. Its ...

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Baby stars, teenage planets, and disappearing icebergs are all featured this week. Plus, a look back at a New Horizons image of Jupiter and Io, and a strange, elongated cloud on Mars.

NASA's Juno mission has detected the most powerful volcanic eruption ever on Jupiter's moon, Io, revealing an interconnected magma reservoir system beneath its surface.

There’s no mistaking Jupiter in the sky these Pottsville winter evenings, rising in the southeast as evening twilight ends.

The simultaneous eruption of multiple volcanoes suggests a vast, interconnected network of magma exists beneath the surface, powered by the intense gravitational pull of Jupiter.