Once its rings vanish from sight in March 2025, Saturn will look like a pale yellow sphere through most telescopes.

Yet, far from acting in courageous defiance, many scientists and administrators now seem to think that the best response to ...

The number of known moons in our Solar System has been rising for centuries, but astronomers say it has probably peaked – for ...

If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's ...

Full of extraordinary footage, Robert Stone's blissed-out mind-bender of a movie meditates on the possibilities of life in the universe.

“Watching Jupiter’s moons move around their planet over the course of a few days, just like Galileo did 400 years ago, is still prime evening entertainment.” The University Observatory in ...

Callisto, the outermost of Jupiter’s 95 moons, first caught NASA’s attention back in the 1990s when the Galileo spacecraft detected an unusual response to the planet’s shifting magnetic field.

NASA’s Voyager 1 spacecraft took the first photos of rings around Jupiter. This was the first time anyone had seen Jupiter’s rings. Because the rings are so thin and faint, it's extremely difficult to ...

It is not every day that you get to share a storm cloud with the author of your favorite book. But at my side, there Kaveh ...

Getting from Earth to space isn’t just about speed—it’s about planning the right trajectory. The Moon, our closest neighbor, ...