A supposed square structure spotted on Mars sparked speculation about alien archeological sites on the red planet. It's a fun ...

Scientists are cataloging and analyzing the first samples collected by NASA's Perseverance rover while the agency weighs its ...

The above image shows a 20-meter-long chunk of frozen carbon dioxide falling off a cliff. Rising temperatures during the ...

Engaging articles, amazing illustrations & exclusive interviews Issues delivered straight to your door or device ...

Musk has long envisioned colonists on Mars. This seems like a fever dream, but it recently featured in Trump’s inaugural ...

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...

NASA researchers have identified geological structures on Mars that are unlike anything found on Earth. From spider-like ...

A laser-engraved, intricately decorated dial with an unusual arrangement proves there is more than one type of ...

A Mars image shows a strange square formation. Some think it's artificial, but experts suggest natural causes.

A square-shaped formation on Mars, about 3 kilometers wide, has generated interest and speculation. NASA's Mars Global ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...