Callisto’s ancient surface and low geological activity contrast sharply with Jupiter’s other moons. Using real mission images, this report outlines NASA’s discoveries about its structure, composition, ...

NASA spotted something moving in one of the moons of Jupiter. Some natural satellites have similar structures to the Earth, ...

"Eight minutes later, the orbiter started receiving data from the descent probe, which slammed into the top of the Jovian ...

NASA astronaut Nichole “Vapor" Ayers captured a stunning photo of a Transient Luminous Event e bolt above a thunderstorm over the Desert Southwest. “Just. Wow. As we went over Mexico and the U.S. this ...

This diagram provided by NASA/JPL-Caltech shows the trajectory of interstellar comet 3I/ATLAS as it passes through the solar system.

China’s Tianwen-3 Mars sample return mission could bring Red Planet rocks back to Earth as early as 2031—years ahead of ...

The newly discovered interstellar visitor is just the third of its kind and fascinates astronomers who hope to learn from it about galaxies far, far away.

Astronomers have spotted a new comet, moving on a trajectory that indicates that it whizzed into our solar system from interstellar space and is just passing through. It's only the third time ...

NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object with the sky-surveying Atlas telescope in Chile earlier this week ...

NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed ...