Mars has experienced multiple ice ages, with each one leaving less ice than the last. By studying craters that serve as “ice ...

Scientists have captured rare insights into Mars’s north polar vortex, where temperatures plunge far below those outside its boundaries and darkness triggers an unusual surge in ozone. New observation ...

Something strange is happening in the frozen skies above Mars’s North Pole. Deep in the planet’s endless winter darkness, where temperatures drop to unthinkable lows and sunlight never reaches the ...

Huge shells of frozen carbon dioxide at Mars' south polar cap resulted in subsurface meltwater, which fed a huge system of rivers, lakes and even a sea, a new study suggests.