The Philippine Mars' final flight ended in Lake Pleasant, Arizona, where the aircraft will be displayed. See photos of the ...

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

NASA sent a valentine to space lovers on social media this week posting images of heart shapes found on Mars. The pictures ...

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

Also making the cut: a Dario Argento reimagining and new titles from Baldvin Z, Matt Harvey, Hanno Hackfort and Carlos Vila.

Known as Noctilucent or night-shining clouds, twilight clouds are typically seen on Earth during the summer, but this time, ...

Mars is often seen as a barren, rust-colored wasteland, but NASA’s Curiosity rover has just revealed a surprising burst of ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

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

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...

The clouds, composed of carbon dioxide ice crystals, glow in shades of red, green, and pearlescent hues in the martian ...