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