ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

Since Callisto also has an intense ionosphere, the team decided to test their methods on 30-year-old measurements taken by NASA's Galileo mission. That mission launched in 1989 and scanned Jupiter ...

It isn't clear what's happening at Callisto to produce so much oxygen, but Carberry Mogan hopes to get a better understanding of processes active in the moon's surface that may yield an ...

Though it's still seven years from reaching Jupiter, the JUICE mission is proceeding apace — and a recent test-run simulated the mission's spacecraft flying by the Jovian icy moon, Callisto.

The Callisto Protocol is set to be the spiritual successor to EA's beloved and critically-acclaimed franchise, but is it worth your time?

Callisto, Jupiter's second-largest moon, may have a rocky surface with an ocean beneath the surface. Corey J. Cochrane, NASA/JPL-Caltech.