Researchers have provided a simple and comprehensive -- if less dramatic -- explanation for bright radar reflections initially interpreted as liquid water beneath the ice cap on Mars' south pole.

A lone researcher may have figured out how Mars was able to support rivers and seas even after the planet had begun to grow cold and its atmosphere thin, and it's all thanks to a cycle of water and ...

Mars is tantalizingly similar to Earth in many ways, but especially in its surface features, which often resemble Earth deserts to an eerie degree. Both Earth and Mars share features such as valleys; ...

A swirling mound of ice riddled with dark spiral troughs crowns the north pole of Mars, seen here in a new mosaic from ESA’s Mars Express. The mosaic comprises 57 separate images taken by the High ...

Scientists using radar data from NASA’s Mars Reconnaissance Orbiter (MRO) have found a record of the most recent Martian ice age recorded in the planet’s north polar ice cap. The new results agree ...

Ice cover on the Great Lakes has often been thought to cap evaporation that can influence water levels and regional weather. But a new study finds ice doesn’t play as big a role in blocking ...

This story was produced in partnership with the Pulitzer Center’s Ocean Reporting Network. A haze of ice crystals in the air created a halo around the low sun as three snowmobiles thundered onto the ...

ITHACA, N.Y. – Cornell University researchers have provided a simple and comprehensive – if less dramatic – explanation for bright radar reflections initially interpreted as liquid water beneath the ...