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

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 ...

The interstellar comet 3I/ATLAS has started to brighten and dim in a remarkably steady rhythm, repeating every 16.16 hours as ...

New evidence from an old NASA mission supports the theory that Jupiter's moon Callisto is in fact an ocean world. A moon of Jupiter about the size of Mercury likely has a several-miles-deep ocean ...

Jupiter, the giant of our Solar System, hosts nearly 100 moons. Discover some of Jupiter moons with unique characteristics to explore.

NASA reveals the true, bizarre reason for the 3I/ATLAS comet's 16.16-hour pulse. Scientists link the interstellar object's ...

Eight distant worlds hold secrets that still puzzle scientists and spark endless curiosity. Each moon offers a strange allure ...