Scientific American spoke with the astronomer who has contributed to the discovery of two thirds of Saturn’s known moons ...

Saturn long held the record for having the most moon, however just a few months ago after the discovery of more moons ...

Curious about how many moons Mars has? Discover fun facts about Phobos and Deimos — Mars' two tiny moons — including their ...

Jupiter may have once been more than twice its current size, with a magnetic field 50 times stronger, say scientists who ...

Dozens of NASA's spaceflight missions that launched from Florida could be in jeopardy under a budget proposal from the Trump ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

Astronomers are developing plans and technology for increasingly powerful space telescopes. For instance, NASA is working on its proposed Habitable Worlds Observatory, which would take ultrasharp ...

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

Astronomers claim to have discovered a new ninth planet in ... in the scientific community about whether it exists. If Planet Nine does exist, it could help to explain some of the unique orbits ...

Saturn is the second-largest planet in the solar system ... Moons of Saturn: Saturn has more than 200 known moons, with 128 confirmed and many others still being studied. The largest, Titan ...