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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 - NASA Science

    6 days ago · Mars is the fourth planet from the Sun, and the seventh largest. It’s the only planet we know of inhabited entirely by robots.

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

    4 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. Mars Facts | What Does Mars Look Like | All About Mars | Mars Pictures

    Feb 16, 2026 · Mars is the fourth planet from the Sun and the seventh largest planet in the Solar System. With evidence suggesting that it once had flowing water, Mars holds many secrets waiting to …

  5. Mars, the red planet: Facts and information | National Geographic

    The red planet Mars, named for the Roman god of war, has long been an omen in the night sky. And in its own way, the planet’s rusty red surface tells a story of destruction.

  6. Mars, the red planet - The Planetary Society

    Scientists are uncovering how Mars transformed into the cold, dry desert world it is today. We explore Mars to understand the planet's history and look for evidence of past or even present life. Is there life …

  7. NASA's Curiosity rover helps find possible signs of Mars life

    6 days ago · Scientists may be one step closer in their hunt for signs of past life on Mars after the Curiosity rover's latest find.

  8. Mars Facts - NASA Science

    Jan 19, 2026 · 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.

  9. NASA Running Out of Non-Life Explanations for What Its Rover Found on Mars

    Feb 14, 2026 · Researchers argue that the presence of long chain carbon molecules on Mars "cannot be readily explained" by non-biological processes alone.

  10. Mars’ missing water quest sees an unexpected breakthrough

    13 hours ago · Scientists have long sought to explain why Mars, once rich in liquid water, became a dry desert. A new study reveals that intense, localized dust storms during the Northern Hemisphere …