Mars, the fourth planet from the Sun, is a subject of fascination for astronomers. Though significantly smaller than Earth, this red-hued world has two moons that continue to spark debate among ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't been for lack of trying. According to a new paper by Thomas Winterhalder of ...

That would make it thousands of times more massive than any moon orbiting a solar system plane  — so massive it could make ...

Since around the time he began his Ph.D. studies in 2008, East Texas A&M University professor and astrophysicist Billy Quarles has been interested in moons. In a recent paper co-authored by Quarles, ...

Free-floating, planetary-mass objects that are just drifting carefree through the galaxy, untethered and starless, appear to be able to generate their own systems of moons, like a planetary system on ...

Many of the most interesting bodies in our Solar System aren’t planets, but the moons that orbit them. They have active volcanoes, hydrocarbon oceans, geysers, and moon-wide oceans buried under icy ...

Planets may begin forming much earlier than scientists once believed during the final stages of a star s birth, not afterward. This bold new model, backed by simulations from researchers at SwRI, ...

People always want to know what will happen to Earth when the sun eventually swells up as a red giant. For one thing, the expanding sun will turn the inner planets into cinders. It will almost ...

Saturn reigns supreme when it comes to the number of moons orbiting any solar system planet. Including the 128 newly-discovered moons from 2025, Saturn has a whopping 274 moons. They range in size ...

Free-floating, planetary-mass objects that are just drifting carefree through the galaxy, untethered and starless, appear to be able to generate their own systems of moons, like a planetary system on ...