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Mars - Wikipedia
Mars Facts - Science@NASA
Mars | Facts, Surface, Moons, Temperature, & Atmosphere
Mars - NASA Science
All About Mars | NASA Space Place – NASA Science for Kids
Mars: Facts About the Red Planet - Star Walk
In Depth | Mars – NASA Solar System Exploration
Overview | Mars – NASA Solar System Exploration
Mars - Red Planet, Orbit, Moons | Britannica
Mars Exploration - NASA Science