History of Astronomy

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Across
  1. 1. Neil Armstrong and _____ Aldrin were the first men on the moon.
  2. 3. He observed the moon phases, showing craters, valleys and ridges and he also noted Jupiter's moons
  3. 5. Modifies Aristotle's geocentric model to include extra circles within the circular orbits.
  4. 6. Publishes his general ‘Theory of Relativity’.
  5. 8. Proposed the geocentric model of the Solar System with the Earth at the centre.
  6. 10. Discovers Uranus.
  7. 12. Edwin discovers galaxies outside the Milky Way and sows the seed for the Big Bang.
Down
  1. 2. Man called Gagarin, the first man in space.
  2. 4. Invented the basic telescope with refracting lenses called the ‘Dutch Spyglass’.
  3. 7. Isaac used the observations of Tycho Brahe, the elliptical orbits of Johannes Kepler and the heliocentric model confirmed by Galileo Galilee to suggest his Law of Planetary Motions.
  4. 9. Suggested that planets appear to be travelling in ellipses rather than circular orbits.
  5. 11. The first satellite is launched.
  6. 13. Used a device called Tychos’ Quadrant to document many nightly observations and astronomical occurrences including the first supernova in the constellation of Cassiopeia