Extension of vocabulary 29.2

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Across
  1. 2. The energy output from the surface of a star per second.
  2. 5. The relationship between stars demonstrated on a graph.
  3. 9. A group of stars named after animals, mythological characters, or everyday objects.
Down
  1. 1. How bright a stars would appear if it were placed at a distance of 10 pc.
  2. 3. The region in a diagram most stars occupy.
  3. 4. When only two stars are gravitationally bound together and orbit a common center of mass.
  4. 6. How bright a stars appear.
  5. 7. A apparent shift in position caused by the motion of the observer.
  6. 8. One of two units of measurement astronomers use to measure for long distances. Longer that a lightyear.