← The Solar System

Chapter 4

Exploring space

For centuries people watched the sky through their eyes, then through telescopes that moved the Sun to the centre and found new planets. In the last seventy years, satellites, astronauts and probes have gone to see for themselves.

12 cards

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  1. Astronomer whose Sun-centred model was published in 1543Nicolaus Copernicus
  2. Astronomer who discovered Jupiter's four largest moonsGalileo Galilei
  3. Astronomer who discovered Uranus in 1781William Herschel
  4. Astronomer who discovered Pluto in 1930Clyde Tombaugh
  5. First artificial satellite to orbit EarthSputnik 1
  6. First human in spaceYuri Gagarin
  7. First crewed mission to land on the MoonApollo 11
  8. First person to walk on the MoonNeil Armstrong
  9. Year of the first crewed Moon landing1969
  10. First spacecraft to reach interstellar spaceVoyager 1
  11. Spacecraft that flew past Pluto in 2015New Horizons
  12. Infrared space telescope launched in December 2021James Webb Space Telescope