"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...

NASA hopes to robotically return pristine Mars rock samples home in the 2030s; the space agency thinks they could potentially show evidence of past surface life. But even if Martian life never ...

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

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

The surface in Mars' northern and southern hemisphere is dramatically different. A groundbreaking study may have solved the 50-year-long mystery troubling scientists as to why one half of Mars is ...

NASA shares an iconic image of carbon dioxide ice erupting in geysers when Martian winter turns to spring.

The problem is, bringing those samples home required multiple other spacecraft ... that could assign the job of sending the surface hardware to Mars to a SpaceX Falcon Heavy booster, which ...

Mars is home to perhaps the greatest mystery of the ... The southern highlands of Mars (which cover about two-thirds of the planet's surface) rise as much as 5 or 6 kilometers higher than the ...

Earlier this month, outgoing NASA Administrator Bill Nelson and other agency officials presented two possible plans for the mission, known as Mars Sample ... on the planet's surface, while others ...