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He formulated a helocentric model of the universe which placed the sun, rather than the earth, at the center.
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Using similair measurments he showed that comets were also not atmosperic phenomend.
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The discovery of the four largest satellite of jupiter and an improved military campass and other instruments.
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He did fundamentail work in the feild og optics. Invented am improved version of the refracting telescope.
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Is known for his work in the fields of astronomy and engineering
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He built the first practical retlecting teles cope and developed a theory of colur.
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Is best known for computing the orbit of the eponymous hailey's comet
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Messier's first documented observation was that of the Mercury transit of 6 May 1753
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Discvered the Planet Uranus, along with two of its major moons.
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Was instrumental in the develpoment of contemporary stellar clasification.
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Developed the general theory of relativity on the two pillars of modern physics
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Established the field of extragellactic astronomy
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Mounted the first observations attempts at detecting extraterrestrial communication in 1960
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Is best known for his contribution to the scientific research of extraterrestrial life
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Was the first to set forth a cosmology explained by a union of the general theory of relativity and quanttm mechanics
