The interstellar comet 3I/ATLAS has shifted from a routine curiosity to a physics puzzle, as NASA and other teams report that ...

NASA’s Mars Reconnaissance Orbiter (MRO) has taken a new and much clearer look at a confusing feature hidden deep under the Red Planet’s polar ice. In 2018, a different spacecraft picked up a bright ...

The discovery suggests that parts of Mars may once have supported tropical-like climates, complete with heavy, sustained rainfall.

A Martian mystery that sparked years of debate — an alleged lake buried beneath miles of ice — now looks far less watery than scientists hoped. A new radar study from NASA’s Mars Reconnaissance ...

Strange, narrow channels threading through some of Mars' sand dunes have intrigued scientists for years. These Martian features don't look like anything on Earth. Early theories proposed that flowing ...

Scientists have found that ancient Martian lakes could have survived for decades despite freezing air temperatures. Using a newly adapted climate model, researchers showed that thin, seasonal ice ...

Mars is full of surprises, but this one had scientists leaning closer to their multi-monitor arrays: a rock, about 31 inches across, sitting alone in a field of fractured bedrock in a region called ...

Mini-lightning strikes created by whirling dust devils on Mars have been detected accidentally by the microphone on board the Perseverance rover. The chance discovery is direct evidence of a form of ...

The current image of Mars as an arid and hostile desert contrasts sharply with the history revealed by its surface. Channels, ...

A chance discovery by a NASA rover on Mars shows that the red planet has a form of lightning, which researchers had suspected for decades but... At long last, the mystery of lightning on Mars is ...