On March 8, 1979, NASA's Voyager 1 spacecraft discovered active volcanoes on Jupiter's moon Io. [‘On This Day in Space’ Video ...

Jupiter’s Galilean moons, Europa, Ganymede, Callisto, and Io, have long been subjects of intense scientific scrutiny, ...

“Our findings suggest that Jupiter’s moons did not form as chemically pristine worlds,” Mousis said. “Instead, they may have accreted, or accumulated, a significant inventory of COMs at birth, ...

Using the Webb telescope, scientists discovered an unexpectedly cold, dense region within Io’s auroral footprint in Jupiter’s northern lights.

Jupiter’s icy moons may have been seeded with the chemical ingredients for life from the very beginning. An international ...

The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up next to the "King of the Planets" as it voyages through the stars of the constellation Gemini.

Southwest Research Institute was part of an international team that demonstrated how complex organic molecules (COMs), key ...

Ganymede's auroras splinter into small, bright patches — structures that mirror features seen in Earth's own auroral displays ...

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A comet from another star system will swing by Mars on Friday as a fleet of spacecraft trains its sights on the interstellar visitor. We already know a decent amount about how planets form, but moon ...

There’s no mistaking Jupiter in the sky these Pottsville 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's four Galilean moons will line up in front of Jupiter in the early morning sky on Aug. 8. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works ...