Space Quiz

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Across
  1. 1. How far could Galileo's telescope see?
  2. 3. What is the biggest planet in our solar system?
  3. 4. How many moons does the earth have?
  4. 8. An orbit around the earth with an orbital period of one sidereal day, matching the earth's sidereal rotation period.
  5. 12. In which orbit is the ISS(international space station) in?
  6. 13. An object which has been placed into orbit by a human endeavour
  7. 16. what is the name of the first artificial satellite placed into orbit.
  8. 17. what is the brightest planet in the solar system?
Down
  1. 2. the hypothetical process of modifying a planet's atmosphere, temperature... in order to make it habitable by humans.
  2. 5. How many planets are there in our solar system?
  3. 6. Which mission was the first to land on the moon?
  4. 7. when a space craft leaves earth and explores space
  5. 9. A group of stars forming a recognizable pattern.
  6. 10. eclipse What is it called when the moon completely covers the sun from our view from earth?
  7. 11. The angle between an objects rotational axis and its orbital axis
  8. 14. month the time between two identical phases
  9. 15. How many people have walked on the moon?