Space

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Across
  1. 3. optical instrument that uses a double convex lenses to collect light and magnify am image.
  2. 4. Optical instrument that uses a concave mirror to collect light and a lense to magnify an image.
  3. 8. late stage in star life cycle that occurs when its hydrogen fuel is depleted its core contract and its outer layers expand and cool
  4. 9. a spiral Galaxy that is about 100,000 light years in diameter and contains from 200 to 400 bilion stars including the sun.
  5. 10. telescope that collects and magnifies radio waves.
Down
  1. 1. Device that disperses light into its component wavelength, using a prism or diffraction grating.
  2. 2. light emitting surface of the sun.
  3. 5. Star pattern that appears to form images, is used by astronomers to locate and name stars, and often is named for a mythological figure
  4. 6. Giant star that has lost its outer layers, leaving behind a hot, dense core that continues to contract under gravity.
  5. 7. Large group of stars, gas, and dust held together by gravity, most commonly can be elliptical, spiral, and irregular.