astronomy crossword

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Across
  1. 5. -orbiting the Earth
  2. 6. star - category of ordinary main sequence stars
  3. 8. -Also called critical velocity or critical rotation
  4. 10. - called planetoids or planetesimals
Down
  1. 1. -An aura of plasma that surrounds cooler stars
  2. 2. stars - background stars
  3. 3. hole -The outer boundary of this region is called the event horizon
  4. 4. dwarf -in its core, with the latter being a characteristic of stars on the main sequence
  5. 7. star -class of variable star
  6. 9. bang - The prevailing cosmological model for the origin of the observable universe
  7. 10. -The scientific study of celestial objects and phenomena