"I've been with John for 32 years and he always had a camera in his hands," Ms Callisto said. "He was supposed to do the exhibition himself … he had some images there already, and I just picked ...

Discovered by Galileo Galilei in 1610, Io, Callisto, Europa and Ganymede are proving to be fascinating topics of study for modern day astronomers. We’ve already sent a mission to one of them ...

In late January this year, NASA’s Psyche spacecraft turned its cameras to the sky and captured some incredible images. The twin cameras onboard, part of the spacecraft’s imaging system, photographed ...

The team at ESOC had to make the engineering model believe it was really in space and flying past Callisto by projecting computer-generated images of Callisto into the model's navigation camera.