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. >>

While the Curiosity rover is busy exploring the Martian surface, I'm busy trying to find my place in high school and at JPL. >>

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. >>

Approaching its 10th anniversary of leaving EarthNASA's Mars Exploration Rover Opportunity is on the move again, trekking to a new study area still many weeks away.

NASA's Mars Science Laboratory mission is approaching its biggest turning point since landing its rover, Curiosity, inside Mars' Gale Crater last summer. >>

Data collected by NASA's Curiosity rover on the way to Mars is providing NASA with information it needs to design systems to protect humans from radiation on deep-space expeditions. >>

Curiosity is at Point Lake on Mars and will snap pictures to send home. Find out more about the rover's 17 cameras, including why some shoot in color and others others take black-and-white images. >>

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. >>

NASA's Curiosity rover switches to long-distance driving mode as she heads to Mount Sharp. >>

NASA's Curiosity finds that the Red Planet doesn't have the same atmosphere it used to. >>

Curiosity is on Mars!Follow Curiosity on her journey at Explore Mars: Curiosity's Journey >>

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

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

Opportunity has now reached its three-year-long target, Endeavour crater, where it will spend time studying rocks never seen before. After a successful six-year mission, Spirit's mission has officially concluded. ››Send a tribute on Spirit’s mission at:http://beamartian.jpl.nasa.gov/spiritpostcards.

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

Follow Curiosity's drive and read about the latest updates on Curiosity's Journey on Mars!Start Now >>

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 >>

Want to drive a rover on the surface of Mars? Play this interactive! >>

Or, how big is the Mars Science Laboratory rover? Ask Dr. C, your personal Mars expert! >>