The discovery of a possible gas giant in the habitable zone of one of the closest stars to Earth opens up exciting possibilities. Could a moon orbiting this planet harbor life, similar to Pandora in ...

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 ...

Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did every planet suddenly get a twin? Where would each planet’s double fit in? Why ...

When a meteor streaks across the sky, it's not just beautiful. It's nature's way of delivering a time capsule to Earth. Contained within are hints about the very beginning of the solar system and how ...

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

In a statement Thursday, astrophysicist Amri Wandel of Hebrew University in Jerusalem said his research challenges the traditional concept of the "habitable zone," the narrow orbital range around a ...

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, ...

A team of astronomers from the University of Montreal has discovered a new potentially habitable exoplanet orbiting the red dwarf star L 98-59, 35 light-years from Earth. This discovery means there ...

The planets have been nicknamed Earth's seven sisters. — -- An international team of astronomers has discovered seven potentially habitable exoplanets — or planets outside our solar system — that ...

Far from the Sun’s heat, orbiting the outer planets of the solar system, are moons with oceans of liquid water beneath their frozen surfaces. Keith Cooper finds out how planetary scientists are ...