A rare celestial event will be taking place in the sky above California on Saturday night, as six planets are expected to be visible in what is being called a "planetary parade." ...

Can you see this weekend’s planetary alignment in the Florida Panhandle? You bet. Here’s when, how and what to expect.

If you examine our solar system’s giant planets, you’ll notice right away that they’ve all got moons—a lot of moons. While ...

Although astronomers have found thousands of exoplanets, the number of confirmed exomoons—and exorings—is still zero. But ...

In late February, people in the Northern Hemisphere can look up for a special sight: six planets will all be visible from clear and dark night skies. New sonifications from NASA’s Chandra X-ray ...

T here are currently six planets visible in the night sky, in a lovely planetary parade. All but Mars can be seen after ...

Saturn’s largest moon, Titan, may have been born in a colossal cosmic crash. New research suggests Titan formed when two older moons slammed together hundreds of millions of years ago—an event so ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered a new exoplanet orbiting a distant star known as TIC-65910228. The newfound alien world ...

Under this new model, Titan itself is the result of a collision between two earlier moons: a large body called “Proto-Titan,” ...

A “ring of fire” solar eclipse will be visible on Tuesday, with the best views in Antarctica and partial eclipse views in Africa and South America.

Astronomers have reported one of the longest stellar dimming events ever recorded, with a Sun-like star fading by 97 percent for nearly 200 days. Astronomers believe one of the longest stellar dimming ...