The discovery of a vast, fresh impact scar on Mars began with what looked like a smudge in a routine weather snapshot. A camera built to monitor daily clouds and dust storms ended up flagging the ...

The findings potentially solve the paradox of how liquid water seems to have persisted on Mars even when the climate grew too ...

Researchers uncover how Mars affects Earth’s orbit, offering new insight into the planetary forces behind ice ages.

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

The UA-run Phoenix Mars lander scraped the surface of our planetary neighbor to verify the presence of frozen water on Mars, and now cameras orbiting the red planet have found a meter-thick layer of ...

If humans are ever to land on Mars, they will need somewhere to stay—a protective shell that can shield them from the sun’s harsh rays. One possible answer: great, glassy domes of ice. Mars is rich in ...

This image, combining data from two instruments aboard NASA's Mars Global Surveyor, depicts an orbital view of the north polar region of Mars. The ice-rich polar cap (the quasi-circular white area at ...

Australia's iconic red landscapes have been home to Aboriginal culture and recorded in songlines for tens of thousands of ...