Researchers using NASA's Mars Reconnaissance Orbiter have found that temperatures in the Martian atmosphere regularly rise and fall not just once each day, but twice. >>

NASA research indicates hunks of frozen carbon dioxide -- dry ice -- may glide down some Martian sand dunes on cushions of gas similar to miniature hovercraft, plowing furrows as they go. >>

Scientists using images from NASA's Mars Reconnaissance Orbiter have estimated that the planet is bombarded by more than 200 small asteroids or bits of comets per year forming craters at least 12.8 feet (3.9 meters) across. >>

The majestic beauty of the Red Planet is featured in a vivid collection of images taken by Mars spacecraft, now on exhibit at Dulles airport in Washington, DC through November 30. See the Mars As Art Gallery >>Dulles Airport Full News Release >>

Two NASA spacecraft orbiting Mars, both working long past their original prime missions, have new project managers at NASA's Jet Propulsion Laboratory, Pasadena, Calif. >>

Hardware from a spacecraft that the Soviet Union landed on Mars in 1971 might appear in images from NASA's Mars Reconnaissance Orbiter. >>

Is frozen carbon dioxide a key to features in some Martian gullies? To find out, scientists grabbed a bag of dry ice and took a road trip. >>

NASA research indicates hunks of frozen carbon dioxide -- dry ice -- may glide down some Martian sand dunes on cushions of gas similar to miniature hovercraft, plowing furrows as they go. >>

Animation of a skinny "dust devil" on the dust-covered Amazonis Planitia region of northern Mars. >>

Mars Reconnaissance Orbiter Catches a Twister in Action. >>

The Red Planet -- or is it? This video answers one of the most frequently asked questions about our planetary neighbor. >>

View the simulated views and computer generated images of where Mars Reconnaissance Orbiter is now. >>

Tune in with Mars on the go.Download the Be A Martian App, on your Android, iPhone, Windows Phone and Tablets! >>

Be part of exploration and discovery, and personally contribute to the expansion of human knowledge for all of us now, and as a legacy for those who follow. >>

Download the Mars Calendar for the years 2013 - 2014 >>

"Eyes on the Solar System" is a 3-D environment full of real NASA mission data. Explore the cosmos, including Mars from your computer. Fly with NASA's Voyager 2 spacecraft. See the entire solar system moving in real time. It's up to you. You control space and time. >>

Mars has remained in the human imagination, and not even the rise of science and technology has interrupted our wary fascination with this neighboring world. >>

Or, how long does it take for Mars to orbit the sun? Ask Dr. C, your personal Mars expert! >>