The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

Researchers are developing bioplastic bubbles from algae that could grow, repair, and protect habitats on Mars without ...

Olympus Mons on Mars is the tallest mountain in the solar system, rising an astonishing 21 kilometers high, nearly two and a half times taller than Mount Everest. But its true scale isn’t just about ...

The LaserSETI project, a pioneering initiative from the SETI Institute, continues to push the boundaries of optical SETI ...

Celebrate the Fourth with the Fireworks Galaxy, then check out the Demon Star Algol and the Full Buck Moon in the sky this ...

NASA's Perseverance rover is digging deeper into Mars' geologic past as it begins grinding into rock surfaces to expose ...

A hidden box-lattice suggests groundwater sculpted Mars long after surface water fled; Curiosity’s drills aim to confirm the ...

It's possible that Mars' moons were originally asteroids that were captured by the planet's gravitational pull. There's also ...

Stargazers in the U.S. will find the slender form of the crescent moon roughly 20 degrees above the western horizon right at ...

Skywatchers around the world have the perfect opportunity this weekend to witness a dazzling celestial show featuring the ...

NASA’s Viking 1 orbiter photographed this region in the northern latitudes of Mars on July 25, 1976, while searching for a landing site for the Viking 2 lander. The image shows a mesa that ...