The ripples suggest that the lake was free of ice at one point.

The iridescent cloud reveals new clues about ice formation in the Martian atmosphere (no little green men, sorry).

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

A recent study has unveiled how chemical elements and powerful winds shape the atmosphere of a planet far beyond our solar system.

Curiosity, a set of NASA 's robotic "eyes" on the Red Planet, recorded 16 minutes of so-called noctilucent clouds flying ...

Martian clouds are almost always made of dry ice, or frozen carbon dioxide. 95% of the planet's atmosphere is CO2.

The above image shows a 20-meter-long chunk of frozen carbon dioxide falling off a cliff. Rising temperatures during the ...

That color has led to them being nicknamed "mother-of-pearl" clouds. While Mars' atmosphere is 95% carbon dioxide, few of its clouds are at a high enough atmosphere and low enough temperature to ...

During the fluctuations between warm and cold climates, the chemistry of Mars' atmosphere was also fluctuating. CO2 is constantly hit by sunlight and converted to CO. In warm periods, the CO could ...

Red-and-green-tinted clouds drift through the Martian sky in a new set of images captured by NASA's Curiosity rover using its ...

American space agency NASA publishes a short video showing iridescent clouds moving in the thin Martian atmosphere, as seen ...

Musk has long envisioned colonists on Mars. This seems like a fever dream, but it recently featured in Trump’s inaugural ...