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

Jupiter's moon count reaches 95+ official satellites. Explore the history of the Jovian system, from Galileo to the latest NASA discoveries.

There’s no mistaking Jupiter in the sky these winter evenings, rising in the southeast as evening twilight ends. In fact, you should be able to easily see it long before twilight fades. Jupiter is ...

In the course of his life, Galileo clashed with other philosophers and religious figures who were committed to the geocentric ...

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

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

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

A quote of the day picks one powerful line of wisdom to spark inspiration, teach a lesson, or prompt daily reflection amid ...

What exists beneath the surface of Jupiter's icy moon, Callisto? This is what a recent study accepted by The Planetary Science Journal hopes to address as a team of researchers investigated the ...

On January 7, 1610, the Italian astronomer Galileo discovered three of Jupiter's moons: Callisto, Europa and Io. When he looked at Jupiter through his telescope, he saw what he thought were three tiny ...

Thick, swirling clouds cover Jupiter from pole to pole. They hold water like Earth’s clouds, but at far greater density.