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  1. Mars - Wikipedia

    In 1971 Mariner 9 entered orbit around Mars, being the first spacecraft to orbit any body other than the Moon, Sun or Earth; following in the same year were the first uncontrolled impact (Mars 2) and first …

  2. Mars: Facts - NASA Science

    Nov 24, 2025 · Mars – the fourth planet from the Sun – is a dusty, cold, desert world with a very thin atmosphere. This dynamic planet has seasons, polar ice caps, extinct volcanoes, canyons and weather.

  3. Mars | Facts, Surface, Moons, Temperature, & Atmosphere | Britannica

    2 days ago · Mars is the fourth planet in the solar system in order of distance from the Sun and the seventh in size and mass. It is a periodically conspicuous reddish object in the night sky. There are …

  4. What is NASA's MAVEN mission? NASA loses contact Mars orbiter

    17 hours ago · NASA has lost contact with its MAVEN spacecraft that has been orbiting Mars for more than a decade. Here's what we know.

  5. In a major new report, scientists build rationale for sending ...

    3 days ago · A new report published Tuesday, titled “A Science Strategy for the Human Exploration of Mars,” represents the answer from leading scientists and engineers in the United States: finding …

  6. Mars Facts | All About Mars – NASA Mars Exploration

    NASA’s real-time portal for Mars exploration, featuring the latest news, images, and discoveries from the Red Planet.

  7. Mars - NASA Science

    Nov 24, 2025 · Mars is one of the most explored bodies in our solar system, and it's the only planet where we've sent rovers to explore the alien landscape. NASA missions have found lots of evidence …

  8. Mars - Red Planet, Orbit, Moons | Britannica

    2 days ago · Mars - Red Planet, Orbit, Moons: Mars is the fourth planet out from the Sun. It moves around the Sun at a mean distance of 228 million km (140 million miles), or about 1.5 times the …

  9. Mars Trek - NASA

    Trek is a NASA web-based portal for exploration of Mars. This portal showcases data collected by NASA at various landing sites and features an easy-to-use browsing tool that provides layering and viewing …

  10. Mars Exploration - NASA Science

    Nov 24, 2025 · For more than 60 years, NASA has pursued answers to one of the biggest questions in science: Was — or is — Mars a habitable world? The key to understanding the past, present, or …