Edwin Hubble 1889 1.) He determent that there are other galaxies in the universe beyond the milky way. 2.) His observation was that things farther away from earth were moving away faster witch meant the universe must be expanding. 3.) He formulated Hubble's law (1 ene 1889 año – 25 mar 1896 año)
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1 ene 1889 año
25 mar 1896 año
~ 7 years and 2 months