Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration shows an ...

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.

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 ...

Mars was once rich with flowing water. Today, it's a cold, dusty desert marked by dried riverbeds and empty lake basins. Traces of ancient streams wind across its surface, hinting at a time when water ...

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, ...

On May 3, 2026, NASA’s Psyche mission captured a stunning image of Mars from 3 million miles away, ahead of a crucial gravity ...

Mars’s atmosphere may have once been hundreds of times thicker than it is today, acting as a blanket that protected it from frequent asteroids that ravaged other planets. While the sun and most ...

A key tracer used to estimate how much atmosphere Mars lost can change depending on the time of day and the surface temperature on the Red Planet, according to new observations by NASA-funded ...

A rendering of the mid-air deployment of one of the SkyFall copters. (NASA Jet Propulsion Laboratory/AeroVironment, Inc.) ...