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

Curiosity rover images show iridescent clouds on Mars, helping scientists explore atmospheric and climate dynamics.

Patsy Cockerham is sharing these linear looking clouds captured on Thursday, Feb. 13 after a dredful week of cold rain and ...

New images captured by NASA's Curiosity rover show colorful clouds in the sky over Mars. The images were captured by the ...

Over the next several weeks, astronomers will be looking closely at an asteroid called 2024 YR4 that could be as big as a ...

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

Sky watchers claim Iowans have been exposed to chemicals and nanotechnology as part of governmental programs to control the ...

A mysterious object that looked vaguely like a comet or a meteor was seen soaring over night skies in the southwestern U.S., ...

Readers’ photos celebrate sunrises and sunsets, when the light is the most pleasing. Fifty-one photos were sent in; here are ...

To see the northern lights in Colorado, a KP index of 5 or higher is usually needed. The KP index measures geomagnetic ...