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Oort, Jan Hendrik

Born: 1900 AD
Died: 1992 AD

1900 – Born on the 28th of April in Franeker, Friesland, Netherlands.

1921 – Studied in Groningen with Jacobus Cornelius Kapteyn. His Ph.D thesis was titled The stars of high velocity.

1924 – He discovered the Galactic Halo a group of stars orbiting the Milky Way.

1927 – He confirmed Bertil Lindblad’s theory that the Milky Way galaxy rotates, by analyzing the movements of stars.

       – He calculated that the center of the Milky Way was 5,900 parsecs (19,200 light years) from the Earth in the direction of the constellation Sagittarius.

1935 – He became professor at the Observatory of the University of Leiden.

1946 – Received a Gold Medal of the Royal Astronomical Society.

1950 – He raised funds for a new radio telescope in Dwingeloo.

       – He was able to demonstrate that the light from the Crab Nebula was Polarized.

1951 – Awarded by Henry Norris Russell Lectureship.

1972 – Awarded by Karl-Schwarzschild-Medaille of the Astronomische Gesellschaft.

1992 – He died on the 5th of November in Leiden, Netherlands.