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

At the surface, Mars is a desolate, barren world with a rocky landscape, massive dust storms and extreme temperature swings.

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...

The night sky is the window to the rest of our universe but it’s also great for lovers. It’s great being in the dark with the ...

The phenomenon of twilight clouds was first observed on Mars in 1997 during NASA’s Pathfinder mission. However, it wasn’t ...

The "parade of planets" in the evening sky continues. Starting the evening of Feb. 22, Mercury will join the lineup but it ...

NASA has released stunning images of mysterious colorful clouds drifting in the sky over Mars. Captured by NASA's Curiosity ...

The four-planet lineup that began in January concludes by mid- to late February, as Saturn sinks increasingly lower in the ...

The zodiacal light shines in the evening as the Moon reaches Last Quarter and skims past Spica and Antares in the sky this ...

The Falcon 9 rocket, which lifted off from Vandenberg Air Force Base, took flight during evening twilight, when light from ...

At some point, on a cool summer evening, Mike listened to a baseball game crackle out of his back porch window for the last time […] ...

The dusk departure for the Falcon 9 rocket at Vandenberg Space Force Base delivered a Monday night display in the sky en ...