Astronomy By: Phoebe and Julia

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Across
  1. 1. The distance light travels in a year
  2. 4. Measures the hotness and luminosity of a star
  3. 6. The most massive stars collapse and form__________
  4. 10. A collection of planets and moons that orbit the sun
  5. 12. Galaxies that have a round or egg-like shape
  6. 14. A explosion that caused the dawn of the universe
  7. 15. Brightness of a star
Down
  1. 2. When the universe moves away from each other
  2. 3. The phase of lifeMain sequence of their life in
  3. 5. Our _______ is the Milky Way
  4. 7. A spectrum that measures electromagnetic waves
  5. 8. Nebula, Main sequence, Red Giant, Plantary nebula, white dwarf
  6. 9. A cloud of dust and gas where stars are formed
  7. 11. A galaxy that has spiral arms
  8. 13. Galaxanes that have a irregular shape