A simple breakdown of the new 3I/ATLAS pulsing discovery and why scientists are checking if Callisto might be affected.

It is a cosmic enigma that has left astronomers scratching their heads: a mysterious object, hurtling into our solar system ...

Next week, Europe will fly its first mission to the Jupiter system to explore the gas giant and three of its intriguing moons. This "means that we have seen the spacecraft for the last time ever," ESA ...

Callisto, Jupiter's second-largest moon, may have a rocky surface with an ocean beneath the surface. If there was a contest for the most interesting moon in our solar system, Callisto would be a ...

NASA’s Juno spacecraft has successfully found and characterised the auroral “footprints” of Jupiter’s moon Callisto for the first time. This discovery completes the “family portrait” of auroral ...

Gorgeous images of stellar nurseries are featured this week alongside some of the solar system's moons: Mars's Deimos, ...

New evidence from an old NASA mission supports the theory that Jupiter's moon Callisto is in fact an ocean world. Credit: NASA / JPL / DLR A moon of Jupiter about the size of Mercury likely has a ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Scientists simulate thermal, energetic components of Jovian magnetospheric plasma irradiating Callisto's atmosphere Differential number flux spectra for (a) protons, (b) oxygen ions, (c) sulfur ions, ...

Still seven years from Jupiter, the JUICE mission is pretending it's already there. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Though it's ...

Callisto's shadow will follow along Jupiter's south-south temperate belt from 9:09 p.m. to 12:54 a.m. tonight Feb. 22-23, 2014. A smaller telescope magnifying around 60x or higher will show it. Credit ...