Astronomy Crossword

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Across
  1. 4. A concentration of mass in which not even light can escape its gravitational pull.
  2. 8. A distinct pattern of stars
  3. 10. A vast collection of stars, planets, and dust
  4. 11. An increase in meteor activity in a certain part of the year
  5. 12. A big cloud of glowing gas in space
Down
  1. 1. When the day and night are equal for a day.
  2. 2. A solid piece of matter entering Earth's atmosphere
  3. 3. When the shadow of another celestial body shades on another
  4. 5. The distance that light takes a year to cross
  5. 6. The distance between the Earth and the Sun
  6. 7. A second full moon in a month
  7. 9. A solid chunk of rock that orbits the sun.