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

Why the 'Planet Parade' will peak this weekend and look its best until 2036 as all seven other planets in the solar system ...

Two planets stand side by side as the evening twilight continues to delight and colorful stars shine in the sky this week.

Ahead of its dance with Saturn on Feb. 24, Mercury should be seen on Feb. 19 at magnitude -1.2 with binoculars 20 minutes ...

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

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

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

The full moon in February was dubbed the snow moon due to the heavy snowfall typically seen this time of year, according to ...

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

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

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may not be the full picture.