NASA's Curiosity rover has made a groundbreaking discovery on Mars by uncovering pure sulfur crystals within a broken rock. This finding is considered a significant scientific breakthrough, as pure sulfur had never been detected on Mars before.

Red-and-green-tinted clouds drift through the Martian sky in a new set of images captured by NASA's Curiosity rover using its Mastcam—its main set of "eyes." Taken over 16 minutes on Jan. 17 (the 4,426th Martian day,

Latin for “night shining,” noctilucent clouds (also known as twilight clouds) are responsible for Earth’s vibrant red, orange, and purple dawn and dusk skies. If the conditions are just right, they sometimes even take on an iridescent,

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

Curiosity, a set of NASA's robotic "eyes" on the Red Planet, recorded 16 minutes of so-called noctilucent clouds flying overhead on Jan. 17. These clouds, sometimes referred to as twilight clouds because they're too faint to see in daylight,

NASA’s Curiosity rover has captured breathtaking images of iridescent clouds drifting across the Martian sky, revealing a celestial spectacle unlike anything seen before. These clouds, composed of frozen carbon dioxide ice,