Mars

A new study reconsiders the controversial findings of NASA's Viking Mars lander in 1976, which some argue may have shown signs of past life on the Red Planet.

NASA's Europa Clipper will fly past Mars today to adjust its trajectory and position itself for a critical phase of its 1.8-billion-mile (2.9-billion-kilometer) trek to the Jupiter system.

"On the ground, it mainly rolls by shifting its center of gravity."

China's Mars rover discovered evidence of an ancient Red Planet beach. Here's why scientists are excited about this.

Scientists searching for microbe fossils on Mars have a better idea of what to look for thanks to gypsum that formed when the Mediterranean Ocean dried up over 5 million years ago.

Mars is known as the "Red" Planet, but what actually makes it red? New research offers answers.

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

Scientists say AI has crossed a critical 'red line' after demonstrating how two popular large language models could clone themselves.

There are many obstacles to overcome before humans can set foot on Mars, including problems surrounding launch mass and closed-loop systems and the hazards of space radiation.

Scientists may have figured out how Mars hung onto its surface liquid water in its ancient history via alternating periods of hot and cold. But what would the impact have been on habitability?