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 ...

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

Curious about how many moons Mars has? Discover fun facts about Phobos and Deimos — Mars' two tiny moons — including their origins, orbits, and a surprising future prediction.

A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow up 2,000 Earths.

It had not been thought possible that such tiny, weak stars could provide the conditions needed to form and host huge planets.

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 ...

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 ...

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

Because Mars and Earth share so many features ... when present in the atmosphere, warms a planet. These minerals suggest that carbon dioxide could have previously existed in the atmosphere ...