Clue Number 4

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Across
  1. 3. The process powering stars by combining lighter elements into heavier ones.",
  2. 4. A pattern of stars named for mythological figures or objects.",
  3. 8. A red supergiant star in Orion's right shoulder.",
  4. 9. A star in Orion's Belt that is actually a complex system.",
  5. 10. A blue-white supergiant, the brightest star in Orion.",
Down
  1. 1. A planet orbiting a star outside our solar system.",
  2. 2. The constellation named after a Greek mythological hunter.",
  3. 5. The distance light travels in one year."
  4. 6. A stellar explosion marking the end of a star's life.",
  5. 7. A massive cloud of gas and dust where stars are born.",