Space Exploration Vocabulary - Units 1 & 2

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Across
  1. 1. Another name for placing Earth at the centre so that the sun, moon and planets revolve around it
  2. 4. Another name for placing the sun at the centre with the planets and moon revolving around it
  3. 6. To throw or bend back from a surface
  4. 9. All objects seen in the sky (sun, moon, stars, and planets)
  5. 10. Newton's law states that all objects attract all other objects, and provides an explaination for the planets' elliptical orbits
  6. 13. Another name in which you can view objects that are magnified using a telescope
  7. 14. A device used to measure the altitude of an object
  8. 16. A figure that looks like a squashed circle; planets in the solar system move in elliptical orbits around the sun
  9. 17. Celestial bodies in our solar system, including Earth, that orbits the sun
  10. 18. A device used to measure an object's azimuth
  11. 19. A set of axes of any kind that is used to describe the positions or motion of things
  12. 20. The large lens at the front of a telescope
  13. 21. The angle measured clockwise from North when measuring altitude-azimuth co-ordinates
Down
  1. 2. Groupings of stars that form patterns, which appear like objects and are given names
  2. 3. To deflect
  3. 5. A model of the universe that places Earth at the centre with the sun, moon, and planets revolving around it
  4. 7. Locate a celestial body relative to a fixed Earth (as though the celestial bodies are circling the Earth)
  5. 8. The angle measured above the horizon in degrees when measuring altitude-azimuth co-ordinates
  6. 11. Determines the fineness of detail a telescope can produce of an object in view
  7. 12. The lens through which you view a magnified object using a telescope
  8. 15. A model of the universe that places at the centre with Earth, the planets and the moon revolving around it.