(Earth's moon is fifth largest, following Io.) Temperature: The mean surface temperature of Callisto is minus 218.47 degrees Fahrenheit (minus 139.2 Celsius). Callisto FAQs answered by an expert ...

Callisto, Jupiter's second-largest moon, could also be home to a subsurface ... It is a scorching world, with surface ...

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.

The most removed from Jupiter of the four main moons, Callisto is a strange world that astronomers think may have the solar system's oldest surface. The moon ... speeds and temperatures in the ...

The moon may seem like a cold, lifeless rock. But how cold does it actually get on the lunar surface? What is the temperature of the moon? Actually, it's not that cold — at least, not all the time.

We’ve already sent a mission to one of them: NASA’s Europa Clipper program was launched back in October of 2024 and is set to perform a number of fly-bys on the moon that is thought to be one ...

Moon, the Earth's natural satellite, may seem like a lifeless cold rock but how cold does it actually get on the lunar surface and what is the temperature on it? In actuality, the Moon is not that ...

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 ...