Ancient shoreline features hint that water on Mars once formed a vast ocean.

MAVEN was built to last in orbit until 2030 — that's not looking likely anymore.

Stephen Kane, a professor of planetary astrophysics at UC Riverside, was skeptical when he read recent studies that showed the gravitational pull from Mars being connected to Earth’s long-term climate ...

Mars today is a frozen, dusty desert. But if you look deep inside Valles Marineris, the largest canyon system on Mars and in ...

Christiaan Huygens created the first recognizable drawings of Mars' surface features during the fall of 1659, an achievement made possible by his advancements in telescope manufacturing. His November ...

Three weeks after the Spirit rover touched down on Mars, its twin rover, Opportunity, landed on the opposite side of the Red ...