If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's ...

Unlike Earth and other rocky planets, Jupiter lacks a solid surface. It’s composed entirely of gas and liquid, making it impossible to land on or walk across. Largest Planet in the Solar System ...

which revealed cyclone swarms gyrating on its surface with roots that likely extend deep below the upper bands of clouds. Though Jupiter has been so intensely examined, many mysteries remain.

NASA’s Juno spacecraft identifies over 40 enormous lava lakes on Io, shedding light on the extreme volcanism sculpting Jupiter’s moon.

In the 1990s, however, NASA's Galileo spacecraft captured magnetic measurements near Callisto that suggested that its ice shell surface—much like that of Europa, another moon of Jupiter—may ...

Mars has a hard, rocky surface with lots of iron in the ... but instead have swirling gases above a solid core. On the surface of Jupiter there is a huge red spot twice as wide as planet Earth.

from the rocky planets to the moons around our gas and ice giants. Europa is one of the closest moons of the gas giant Jupiter. Scientists believe that there is a subsurface ocean beneath Europa's ...

Mercury has a rocky surface when, facing the sun ... as all of the remaining three gas giants – Jupiter, Uranus and Neptune – have faint rings. And as of June 2023, Saturn has 146 moons ...

Jupiter's second-largest moon has more impact craters on its surface than any other planetary ... suggests there's an ocean under the moon's rocky exterior. It's taking so long to prove the ...