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Lunes, 7 de febrero de 2011. QUIMICA, UNIVERSO, TIERRA Y VIDA. 1- ATOMOS Y MOLECULAS EN EL UNIVERSO. LA TABLA PERIODICA DE LOS ELEMENTOS. ASTRONOMOS y físicos han postulado como el origen del universo a una gran explosión que formo innumerables galaxias. Una de esas galaxias es la vía láctea, formada por más de 100 mil millones de estrellas, entre ellas se encuentra nuestro sol.