Is Mars' soil too dry to sustain life?

Life as we know it needs water to thrive. Even so, we see life persist in the driest environments on Earth. But how dry is too dry? At what point is an environment too extreme for even microorganisms, the smallest and often ...

Light pollution threatens Chile's dark skies

It seems nothing can escape the inexorable spread of light pollution—not even the giant telescopes probing the heavens above northern Chile, a region whose pristine dark skies, long considered a paradise for astronomers, ...

Image: Salar de Atacama from orbit

From the Salar de Atacama salt flat in the east to the Cordillera Domeyko mountains in the west, Sentinel-2 takes us over part of the Atacama Desert in northern Chile.

Detecting life in the ultra-dry Atacama Desert

Few places are as hostile to life as Chile's Atacama Desert. It's the driest non-polar desert on Earth, and only the hardiest microbes survive there. Its rocky landscape has lain undisturbed for eons, exposed to extreme temperatures ...

Chile desert combed for clues to life on Mars

Chile's Atacama desert may seem to contain little besides red-grey rocks and sand—but scientists are busy searching here for clues to life in a place it much resembles: Mars.

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