Astrology

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Across
  1. 2. The heat of the surface of a star or stellar body
  2. 4. A mass of rock, dust, and metal
  3. 5. The speed at which an object orbits another body
  4. 6. a gravitaionally bound system of stars
  5. 8. A luminous ball of plasma
  6. 10. The brightness of a star from Earth
  7. 11. An icy ball of frozen gas
  8. 12. A superheated expansion of the universe
Down
  1. 1. A baby star
  2. 3. The brightness of a star from 10 parsecs away
  3. 7. A natural satellite
  4. 9. 90% of a stars life cycle