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Galaxies are huge collections of stars, gas and dust, and mysterious dark matter. Galaxies are thousands of light years across and contain billions of stars. We are in the Milky Way galaxy ...Read more
2/1 Werner Heisenberg, a German physicist, died on this date in 1976 Details
2/8 Dmitri Mendeleev, a Russian chemist who created the periodic table of elements, was born on this date in 1834
2/10 Wilhelm Roentgen,a German physicist who discovered x-rays, died on this date in 1923 Details