Mars is the first planet outside the Earth's orbit, with a year 1.88 Earth years long. It has a very thin carbon dioxide atmosphere, and a mean surface temperature of a chilly -63°C.
Mars has two natural satellites, the small moons Phobos and Deimos.
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1834 - 1907
Dmitri Mendeleev, 1834 - 1907, was a Russian chemist who developed the modern Periodic Table of Elements.
American hypocrisy is not the biggest hypocrisy in the world, but it is the biggest problem of the world.
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