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

How big can volcanic eruptions get on Jupiter’s moon, Io? This is what a recent study published in the Journal of Geophysical ...

Looking for a sky event this week? Check out our full Sky This Week column. January 20: Comet Schaumasse slides by some ...

Io and its shadow cross Jupiter overnight tonight with only 20 minutes between them. Finding Jupiter is likely familiar by now, as the gas giant shines brightly in Gemini near the heads of the Twins.

On October 10, 2025, a double transit event of Jupiter's moons, Io and Europa, along with their shadows, is observable across the planet's disk. This predawn phenomenon begins at 4:30 A.M. EDT with ...

Jupiter will be at its most spectacular in 2026 in the early hours of Jan. 10, as it shines above the eastern horizon among ...

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 lava ...

The giant planet Jupiter has nearly 100 known moons, yet none have captured the interest and imagination of astronomers and ...

In a new study, scientists used advanced computer models to peer beneath Jupiter's dense swirling cloud tops and tackle a ...

After modeling Europa's conditions, the researchers concluded that its rocky seafloor is likely mechanically too strong to ...

On January 7, 1610, the Italian astronomer Galileo discovered three of Jupiter's moons: Callisto, Europa and Io. When he ...

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