Nebula Crossword Puzzle

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Across
  1. 3. reflect light off other stars
  2. 4. a large cloud of dust containing stars
  3. 6. glows faintly from producing their own light or reflecting off stars
Down
  1. 1. glow its own light
  2. 2. absorbs light and appears as a black patch
  3. 5. another name for nebulae