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Johannes Kepler

By 14wkramer
  • Dec 27, 1571

    First two of Kepler's laws published

    Kepler offiially published his first two laws of planetary motion.
    1. The orbit of every planet is an ellipse with the Sun at one of the two foci.
    2. A line joining a planet and the Sun sweeps out equal areas during equal intervals of time.
  • Period: Dec 27, 1571 to

    Willy Kramer & Zak Graham Johannes Kepler proj

  • last of Kepler's laws published

    Kepler officialy published his third and final law.
    3. The square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.

  • First proposal of satalitte development by Russians

    Sergei Korolev addressed Dimitri Ustinov, the Minister of Defence Industries, proposing the development of an Earth-orbiting (artificial) satellite, forwarding a report by Mikhail Tikhonravov with an overview of similar projects abroad.

  • Sputnik Launched

    he Soviet Union launched it into an elliptical low Earth orbit

  • Apollo 11

    Apollo 11 was the spaceflight that landed the first humans on the Moon, Americans Neil Armstrong and Buzz Aldrin