Space

2. late stage in a star's life cycle that occurs when its Hydrogen fuel is depleted, its core contracts, and its outer Layers expand and cool.
5. giant star that has lost its outer layers, leaving behind a hot, dense core that continues to contract under gravity.
6. large group of stars, gas, and dust held together by gravity most commonly can be elliptical, spiral and irregular.
7. device that disperses light into its component wavelenghts, using a prism or diffraction grating.
10. light-emitting surface of the sun.

1. optical instrument that uses a concave mirror to collect light and a lens to magnify an image.
3. optical instrument that uses double convex lenses to collect light and magnify an image.
4. a spiral galaxy that is about 100,000 light-years in diameter and contains from 200 to 400 billion stars, including the sun.
8. telescope that collects and magnifies radio waves.
9. Star 0pattern that appears to form images, is usedby astronomers to locateand name stars, and often is named for mythological figures