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  2. Mars - Wikipedia

    en.wikipedia.org/wiki/Mars

    Mars is scarred by a number of impact craters: a total of 43,000 observed craters with a diameter of 5 kilometres (3.1 mi) or greater have been found. [98] The largest exposed crater is Hellas , which is 2,300 kilometres (1,400 mi) wide and 7,000 metres (23,000 ft) deep, and is a light albedo feature clearly visible from Earth.

  3. List of craters on Mars - Wikipedia

    en.wikipedia.org/wiki/List_of_craters_on_Mars

    The total number of craters on Mars greater than 1 kilometre in diameter is approximately 385,000, with 21% of those (~85,000) being over 3 kilometers in diameter. [3] The number of craters on Mars over 25 metres in diameter is suggested to be approximately 90 million.

  4. Geology of Mars - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Mars

    Straddling the dichotomy boundary in Mars's western hemisphere is a massive volcano-tectonic province known as the Tharsis region or the Tharsis bulge. This immense, elevated structure is thousands of kilometers in diameter and covers up to 25% of the planet's surface. [29]

  5. List of Solar System objects by size - Wikipedia

    en.wikipedia.org/wiki/List_of_Solar_System...

    This list contains a selection of objects 50 and 99 km in radius (100 km to 199 km in average diameter). The listed objects currently include most objects in the asteroid belt and moons of the giant planets in this size range, but many newly discovered objects in the outer Solar System are missing, such as those included in the following ...

  6. Moons of Mars - Wikipedia

    en.wikipedia.org/wiki/Moons_of_Mars

    Phobos has a diameter of 22.2 km ... for an observer on Mars. It has an angular diameter of about 2'. The Sun's angular diameter as seen from Mars, by contrast, is ...

  7. Jezero (crater) - Wikipedia

    en.wikipedia.org/wiki/Jezero_(crater)

    Jezero on the edge of the Isidis basin. Jezero [a] (ICAO: JZRO) is a crater on Mars in the Syrtis Major quadrangle, [3] about 45.0 km (28.0 mi) in diameter. Thought to have once been flooded with water, the crater contains a fan-delta deposit rich in clays. [4]

  8. Gale (crater) - Wikipedia

    en.wikipedia.org/wiki/Gale_(crater)

    It is 154 km (96 mi) in diameter [1] and estimated to be about 3.5–3.8 billion years old. [3] The crater was named after Walter Frederick Gale, an amateur astronomer from Sydney, Australia, who observed Mars in the late 19th century. [4] Mount Sharp is a mountain in the center of Gale and rises 5.5 km (18,000 ft) high.

  9. Volcanism on Mars - Wikipedia

    en.wikipedia.org/wiki/Volcanism_on_Mars

    The western hemisphere of Mars is dominated by a massive volcano-tectonic complex known as the Tharsis region or the Tharsis bulge. This immense, elevated structure is thousands of kilometers in diameter and covers up to 25% of the planet's surface. [23]