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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 …

  2. Mars: Facts - NASA Science

    Jul 15, 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 …

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

    Oct 30, 2025 · 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. …

  4. What Does Mars Look Like | All About Mars - Star Walk

    Oct 27, 2025 · Mars can boast the largest volcano in the entire Solar System – Olympus Mons. With a height of 21 km, it stands about 2.5 times taller than Mount Everest. Mars’ larger moon, …

  5. 39 Mars facts, discoveries and images - BBC Sky at Night Magazine

    A guide to the Red Planet, Mars, including facts about its geology, a history of Mars missions and images captured by astrophotographers.

  6. Mars Facts - Fourth Planet From the Sun - Science Notes and ...

    Dec 18, 2024 · Discover interesting Mars facts. Learn about the size, moons, surface features, and seasons of the fourth planet from the Sun.

  7. Mars, the red planet - The Planetary Society

    Mars once had liquid water on its surface and could have supported life. Scientists are uncovering how Mars transformed into the cold, dry desert world it is today.