Space Exploration

  • Repaired Hubble Space Telescope

    A team of astronauts repaired this telescope by installing a set of small mirrors designed to correct images obtained by the faulty mirror.
  • Sputnik 1

    First artificial satellite in space
  • Yuri Gagarin

    Yuri Gagarin was the first human in space
  • Alan Shepard

    Alan B. Shepard became the first U.S citizen in space.
  • John Glenn

    John glenn became the first U.S citizen to orbit Earth
  • Mariner 2

    Went to Venus, verified high temperatures in Venus's atmosphere
  • Apollo 11

    First human to walk on moon was Neil Armstrong
  • Pioneer 10

    Went to Jupiter, sent back photos of Jupiter--first probe to encounter an outer planet
  • Mariner 10

    obtained the first good images of the surface of Mercury
  • Viking 1

    Went to Mars, orbiter mapped the surfae of Mars; lander searched for life on Mars
  • Venera 8

    took a picture of Venus's surface, parts of the spacecraft's landing gear are visible at the bottom of the photograph
  • Magellan

    Went to Venus, mapped Venus's surface and returned data on the composition of Venus's atmosphere
  • Hubble Space Telescope was launched

    This was the first time it was launched
  • Galileo Galilei first turned a telescope toward the stars.

    People had been searching for better ways to study what lies beyond Earth's atmosphere.