Space System

123456789101112131415161718
Across
  1. 5. A region between Mars and Jupiter which asteroids are found.
  2. 7. Spiral Elliptical irregular
  3. 11. cloud a giant spherical cloud surrounding the sun
  4. 12. the total amount of matter in an object
  5. 15. a celestial body resembling a small planet
  6. 16. a curved path of an object
  7. 17. an instrument that makes distant objects appear close
  8. 18. an imaginary line that runs through an object
Down
  1. 1. celestial object consisting of a nucleus of ice and dust
  2. 2. a method for reducing all measurements
  3. 3. a natural satellite of the Earth
  4. 4. a large system of stars gas, and dust
  5. 6. year the distance that light travels in one year
  6. 8. a natural or artificial that orbits other objects in space
  7. 9. a fixed luminous point in the sky
  8. 10. a branch of science
  9. 13. a celestial body which orbits a star
  10. 14. all existing matter