Megan Tinnerello.

By jrainey
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    Science Exploration

  • The First Rocket

    The First Rocket
    Robert Goddard's liquid-fueled rocket rose 12 m. into the air.
  • First U.S. satellite

    First U.S. satellite
    Explorer 1 was launched. It orbited Earth 58,000 times before burning up in Earth's atmosphere in 1970.
  • Luna 1 was launched

    Luna 1 was launched
    Luna 1, first man-made satellite to orbit the moon, is launched by the U.S.S.R.
  • First weather satellite

    First weather satellite
    Tiros 1, the first successful weather satellite, is launched by the U.S.
  • First planetary probe

    First planetary probe
    Mariner 2 traveled to Venus and collected data for 3 months. The craft now orbits the Sun.
  • First Walk

    First Walk
    The first space walk is made from Soviet Voskhod 2 by Cosmonaut Alexei A. Leonov. Duration is 12 minutes.
  • First probe to outer solar system

    First probe to outer solar system
    After flying past Jupiter, Pioneer 10 is still traveling onward, someday to exit the solar system.
  • SMS-1

    NASA launches the first Synchronous Meteorological Satellite, SMS-1.
  • Supernova

    Supernova 1987A blazes into view.
  • Galileo Space Probe

    Galileo Space Probe
    The Galileo space probe safely completes its encounter with Jupiter's ice moon, Europa, at an altitude of 343 km. Later in the year, on May 30, Galileo flies by Jupiter's largest moon Ganymede at an altitude of 808 km.