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

All evidence points to Mars having had a carbon dioxide-rich atmosphere billions of years ago, but insufficient carbonates in Martian soil challenge this theory. Now, a new study using data from ...

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.

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, ...

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 ...

Mars is the fourth planet from the sun and has a distinct rusty red appearance and two unusual moons. The Red Planet is a ...

NASA’s Curiosity rover has found evidence that chemistry in the surface material on Mars contributed dynamically to the makeup of its atmosphere over time. It’s another clue that the history of the ...

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

Mars' atmosphere is one of the planet's most scientifically controversial characteristics. We know that the Red Planet's atmosphere is incredibly sparse, but mounting evidence suggests it once ...

When the surface of the Sun exploded with activity in May 2024, Earth was hit by the biggest solar storm in more than two decades. The video shown below—made from images captured by NASA’s Solar ...

New research suggests Mars' missing atmosphere -- which dramatically diminished 3.5 billion years ago -- could be locked in the planet's clay-covered crust. Water on Mars could have set off a chain ...