For years, scientists have puzzled over how Mars lost the thick atmosphere it once had. That atmosphere was essential for liquid water to exist on the planet’s surface, billions of years ago. Today, ...

Five years after NASA’s MAVEN spacecraft entered into orbit around Mars, data from the mission has led to the creation of a map of electric current systems in the Martian atmosphere. “These currents ...

Add Yahoo as a preferred source to see more of our stories on Google. Mars just gave up one of its oldest secrets — and it took a decade, a spacecraft, and a cosmic cannonball to catch it in the act.

NASA confirms that Mars has air, but its composition and extremely low pressure raise a far more serious question: could a ...

Stand on the surface of Mars without a spacesuit and you would lose consciousness in roughly 15 seconds. Not because of the ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. Mars' missing atmosphere may be locked up in the planet's clay-rich surface, a new study by MIT geologists has suggested.

HOUSTON—Scientists assigned to NASA’s Mars Atmosphere and Volatile Evolution, or MAVEN, spacecraft have quantified the red planet’s loss of atmosphere to the forces of the solar wind and radiation, ...

An international team of scientists has modeled the behavior of the atmosphere of a Mars—like exoplanet orbiting Barnard's star, a red dwarf six light-years from Earth. This was reported on the news ...

It's not entirely clear how neighboring planet Mars went from a presumably life-supporting planet to a place as dead as all others in the solar system. We do know, however, that whatever water and ...

HOUSTON—NASA is assembling an anomaly review board and attempting to reestablish communications following its Dec. 6 loss of contact with the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft.