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The Crow is a 1994 American supernatural action film directed by Alex Proyas, written by David J. Schow and John Shirley, and starring Brandon Lee in his final film appearance. Based on James O'Ba ...
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David J. Griffiths (born 1942) is a U.S. physicist and educator. He worked at Reed College from 1978 through 2009, becoming the Howard Vollum Professor of Science before his retirement. He is not to b ...
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Los cometas son cuerpos celestes constituidos por hielo, polvo y rocas que orbitan alrededor del Sol siguiendo diferentes trayectorias elípticas, parabólicas o hiperbólicas. Los cometas, junto con los ...
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