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  1. Mars: Facts - NASA Science

    Nov 24, 2025 · Mars appears to have had a watery past, with ancient river valley networks, deltas, and lakebeds, as well as rocks and minerals on the surface that could only have formed in liquid water.

  2. Mars - Wikipedia

    Its surface gravity is roughly a third of Earth's or double that of the Moon. Its diameter, 6,779 km (4,212 mi), is about half the Earth 's, or twice the Moon's, and its surface area is the size of all the dry land …

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

    Dec 10, 2025 · Mars has only 28 percent of the surface area of Earth, but, because more than two-thirds of Earth is covered by water, the land areas of the two planets are comparable.

  4. Explore the Surface of Mars in 360° | AMNH

    A text box covers the surface of Mars: “The surface of Mars in this video is made of images taken by different space missions, not simulations. When we knit all these images together, it creates the …

  5. Mars: Definition, Atmosphere, Size, Discovery, Surface

    Mar 27, 2025 · Mars is the fourth planet from the Sun in the solar system. Mars exhibits a reddish hue caused by iron oxide on its surface. It has a thin atmosphere, diverse surface features such as …

  6. ESA - Facts about Mars

    Martian year: 669 sols or 687 Earth days. Average temperature: –55ºC (from –133ºC at the winter pole to +27ºC during summer) Atmosphere: 95.32% carbon dioxide, 2.7% nitrogen, 1.6% argon, 0.13% …

  7. Mars Geology: The Red Planet Surface and Features

    5 days ago · The geological study of Mars reveals a world that is simultaneously familiar and alien. It stands as a planetary neighbor that shares significant characteristics with Earth yet evolved along a …

  8. Stunning Mars Surface Close-Up | NASA Footage from the Red Planet

    Explore the incredible surface of Mars in this breathtaking close-up view captured by NASA. 🌍 From rocky textures to ancient craters, Mars continues to amaze us with its beauty and...

  9. Planet Mars | Facts, Images, Surface | GO ASTRONOMY

    Here are some major surface features of Mars. Mars has two small moons - both of which may be captured asteroids. Deimos and Phobos are very difficult to see except in large telescopes due to …

  10. Mars Surface - Universe Today

    Jun 6, 2008 · Mar's surface is a dry, barren wasteland marked by old volcanoes and impact craters. The entire surface can be scoured by a single sand storm that hides it from observation for days at a time.