Ganymede, Jupiter's largest moon and the solar system's largest, is bigger than Mercury and the dwarf planet Pluto, with a diameter of 5,268 kilometers.

The solar system is home to bizarre moons like Enceladus and Callisto, each unveiling nature’s wonders and some of science’s ...

Researchers use a portable fluorescence spectrometer to analyze the glowing formations in underground caves. Now, researchers ...

Additionally, China is also investing in a human lunar program, seeking to land its own astronauts on the surface of the Moon ...

Witness celestial beauty! NASA's stunning images of the Moon, Jupiter, and Mars showcase our solar system's breathtaking ...

The James Webb and Hubble space telescopes have captured Neptune’s auroras for the first time, revealing the planet’s ...

Fluorescent caves deep below America show how alien life could exist on one of Jupiter's moons, say scientists. Get any of ...

But that hasn’t always been the case. Jupiter’s four largest moons—Io, Europa, Ganymede, and Callisto—were the first to be discovered orbiting another planet. Galileo Galilei spotted them ...

Callisto would be a contender. Jupiter's second-largest moon has more impact craters on its surface than any other planetary body in the solar system, and it has tons of ice on its surface as well.

Cohen also detailed ongoing studies being performed in relation to changes on the moon's surface.

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 suggest ...

Honeybee Robotics' Lunar PlanetVac instrument shown at the end of Blue Ghost’s surface access arm. Firefly Aerospace Firefly’s Blue Ghost lander has been parked on the Moon for a little over a ...