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

With so many things flying around in the sky, it’s hard to tell what you’re seeing sometimes as stars, satellites and aircraft take up the night sky.

Low clouds may have spoiled the view from the ground, but a Falcon 9 set a new record early Saturday as SpaceX pushes ...

The Tarantula Nebula, also known as 30 Doradus, is revealed in an unusual light in this exceptionally deep Chandra X-ray ...

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

The Sun sets differently on Mars. Part of that is due to its distance from the star (an average of 142 million miles versus ...

At the surface, Mars is a desolate, barren world with a rocky landscape, massive dust storms and extreme temperature swings. However, a rover recently captured a splash of color in the sky as rare ...

Contrails conjure a sense of something overwhelming and ineffable, as terrifying as it is beautiful.