Space Is Callisto, Jupiter’s moon with the most craters and third largest in the Solar System, an oceanic world with life? Callisto, the outermost of the 95 Jovian moons, first caught NASA’s ...

Callisto's density and temperature were refined, and images of the surface showed features as small as 1 kilometer per pixel — in other words, a resolution small enough to spot impact craters ...

More pocked with craters than any other object in our solar system, Jupiter's outermost and second-biggest Galilean moon, Callisto, appears geologically unremarkable. In the 1990s, however, NASA's ...

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 ...

Callisto, the second-largest moon of Jupiter, is covered in craters and appears, at first glance, geologically inactive. However, magnetic measurements taken by the Galileo probe in the 1990s ...

Callisto's surface, however, has remained essentially unchanged for more than 4.5 billion years, developing its dense landscape of overlapping craters across aeons. Dactyl (Image credit: NASA ...

Callisto is one of the solar system’s oldest objects, having formed some 4.5 billion years ago around Jupiter. It is also one of the most battered objects, with a surface blanketed by craters ...

The icy Jupiter moons Callisto, Europa and Ganymede all likely host hidden global oceans, but that's not the only reason they stand out.