Besides Earth, Mars is the planet that we know the most about, but that doesn't mean there isn't more to discover; Mars can ...

An illustration shows an misty atmosphere around the Red Planet Mars. Could this envelop of gas have "gone to ground" billions of years ago?. | Credit: Robert Lea (created with Canva)/NASA New ...

Add Yahoo as a preferred source to see more of our stories on Google. MAVEN data shows Mars can redirect plasma inside its ionosphere during solar storms, revealing a new space weather effect. (CREDIT ...

Mars wasn't always the cold desert we see today. There's increasing evidence that water once flowed on the red planet's surface, billions of years ago. And if there was water, there must also have ...

See more of our trusted coverage when you search. 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 ...

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 ...

Martian helicopters might seem like a sci-fi concept, as Mars' atmosphere isn't friendly to aircraft. But actually, the idea is more real than you might think.

A veteran spacecraft has sniffed the Martian atmosphere for the last time. More than a decade after the MAVEN orbiter arrived at Mars and six months after it unexpectedly went quiet, NASA has ...

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, ...

One of the great unsolved problems in modern planetary science is written on the surface of Mars. Mars has canyons that were carved by rivers, so it was once warm enough for liquid water. How—and ...

The fact that the cold, dry Mars of today had flowing rivers and lakes several billion years ago has puzzled scientists for decades. Now, researchers think they have a good explanation for a warmer, ...