Observing the Universe

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Across
  1. 2. the alteration of the original shape of something.
  2. 5. the act of interfering, invading, or poaching.
  3. 8. telescope use a curved mirror to concentrate.
  4. 9. the entire range of radiant energy.
  5. 11. an astronomical body orbiting a star or stellar remnant.
Down
  1. 1. collect visible light waves.
  2. 3. telescope use a convex lens to concentrate.
  3. 4. all what in space.
  4. 6. type of astronomical object consisting of a luminous spheroid of plasma.
  5. 7. an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation.
  6. 10. a group of galaxy.
  7. 12. the close star to earth.