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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'Universe' on ScienceLibrary.info covers astronomy, cosmology, and space exploration. Learn Science with ScienceLibrary.info.
John Sulston, born 1942, is an English biologist and geneticist, most well-known for the first animal genome sequencing (nematode), and winning the race to sequence the human genome, ensuring it would remain a public property legacy.
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