Milky Puzzle

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Across
  1. 3. All of space and the matter space contains
  2. 5. A very large star that is even brighter than a giant
  3. 6. A celestial body consisting of a mass of gas held together by its own gravity in which the energy is generated by nuclear reactions in its interior
  4. 9. large barred spiral galaxy that appears as a milky band of light when seen in a really dark area
Down
  1. 1. Stable stars in the middle devolpement phases that plot along a continous diagnol belt on the HSR diagram
  2. 2. galaxy with long oval shape, a bright center, no apperent internal structure or spiral arms, and very little dust or gas
  3. 4. what stars become after they have exaughsted their nuclear fuel
  4. 5. A galaxy with a buldge in the center and very distinct long arms winding around the center
  5. 7. A galaxy with very little symmetry that does not fit into any catagory
  6. 8. Large clouds of gas and dust in interstellar space;the location of star formation
  7. 10. A large grouping of stars in space