Why it matters: While not evidence of life, these discoveries show that ancient Mars had complex organic chemistry, ...

Scientists believe these rocks were formed by ancient rainfall and humidity, similar to processes on Earth. The discovery adds to the evidence that Mars may have once been a habitable planet capable ...

Aluminium-rich pebbles found in the Jezero Crater indicate that Mars was far from a cold, icy planet billions of years ago, ...

A recent study showed that Mars was warm and wet billions of years ago. The finding contrasts with another theory that this era was mainly cold and icy. The result has implications for the idea that ...

A new scientific study suggests that Mars may have experienced a warm and wet climate billions of years ago, challenging the long-standing theory that the planet was predominantly cold and icy during ...

Evidence is mounting that the same basic chemistry that made Earth habitable is unfolding, or once unfolded, on Mars. From complex organics to minerals linked with microbial activity, the Red Planet ...

New research has mapped 16 extensive, interlaced river systems on Mars, dating back approximately 3.7 billion years to the Early Hesperian Period. These large river systems, despite covering only ...