Space Vocab

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Across
  1. 6. a celestial body orbiting a star.
  2. 8. the quantity of matter in which a body contains.
  3. 10. a number which scales, or multiplies, some quantity.
  4. 11. a celestial object made up of a nucleus of ice and dust.
  5. 12. the name we use to describe all the things in space.
  6. 13. the curved path of a celestial object or spacecraft.
  7. 14. a mostly spherical area that is around the Solar System.
  8. 16. has wavelengths longer than those of visible light.
  9. 17. a celestial body resembling a small planet.
  10. 19. an instrument made to make far objects look closer
  11. 20. eight planet and their moons orbiting the Sun.
Down
  1. 1. a place of the Solar System beyond the orbit of Neptune.
  2. 2. the natural satellite of the earth.
  3. 3. a system of millions or billions of stars.
  4. 4. a fixed luminous point in the night sky.
  5. 5. the branch of science which deals with objects in space.
  6. 7. a torus-shaped region in the Solar System,
  7. 9. an artificial body placed in orbit around a planet.
  8. 15. a unit of astronomical distance.
  9. 18. an imaginary line about which a body rotates.