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and seasonal cycles are also similar to those of the Earth. Of all the planets in the Solar System other than Earth, Mars is the most likely to harbour liquid water and perhaps life. There are ongoing investigations assessing Mars's past potential for
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is the fourth planet from the Sun and is known as the "Red Planet" due to its reddish appearance as seen from Earth. The planet is named after
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region of the planet. The volume of water detected has been estimated to be equivalent to the volume of water in
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image of Mars, taken from a distance of about 240,000 kilometres (150,000 mi) by the
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rover. In
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of the Earth. The planet has the highest mountain in the
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of the Moon and the volcanoes, valleys, deserts and
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