Astronomers have discovered what they think may be another moon orbiting a distant dwarf planet called Quaoar. This small, ...

"The profile of the occultation was most consistent with it being a new satellite — a new moon — going around Quaoar." ...

This was an unexpected and coincidental discovery of a small, icy, egg-shaped planet in the outermost reaches of our solar ...

Imagine a scenario where the Moon, our constant companion in the night sky, begins a deadly trajectory toward Earth. The ...

The region where the gravitational influence of Earth is the dominant force, is called the Hill Sphere. This extends up to ...

Changes to space policies and projects indicate an administration’s bigger goals, writes Joelle Renstrom. Which is why the ...

"Makemake is one of the largest and brightest icy worlds beyond Neptune, and its surface is dominated by frozen methane," ...

A full moon is slated for Sept. 7, but there are other celestial events occurring this month. More on viewing Saturn at its ...

Is the moon a star or a planet? The correct answer is "neither," but that's not the consensus reached when the argument comes up in this funny TV clip. During a recent show for the QVC shopping ...

Sky-gazers can catch a glimpse of the full moon at its peak illumination this week. August’s full moon, also called the sturgeon moon, will be visible from Friday night into the early hours of ...