Two icy moons of Jupiter, though neighboring and of similar size, exhibit radically different internal structures. A new ...

Life outside the Earth is one of the biggest "what if" in history, but NASA is trying to put a end to the discussion - or add more to it - with this new world.

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

NASA have found something new moving in our Solar System. Even thought it's not water, still a phenomenon worth of time ...

Are you preparing for UPSC CSE Prelims 2026? Check your progress and revise your topics through this quiz on Science and Technology.

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

Callisto, the outermost of Jupiter’s 95 moons, first caught NASA’s attention back in the 1990s when the Galileo spacecraft detected an unusual response to the planet’s shifting magnetic field.

The new evidence regarding Callisto comes from a somewhat surprising place: old data. NASA's Galileo mission, which launched into space in 1989, was designed to study Jupiter, its moons, and its ...

Callisto, Jupiter's moon, is likely an ocean world, with evidence suggesting a subsurface ocean beneath its ice shell. Reanalysis of Galileo spacecraft data, ...

Jupiter's four best-known moons are the Galilean moons, discovered by Galileo Galilei in 1610. They are named Ganymede, Callisto, Io and Europa, after figures in Greek mythology associated with ...

One of Jupiter’s 95 known moons, Europa is almost the size of our own moon. It's encased in an ice sheet estimated to be 10 miles to 15 miles or more thick.