Asteroid Day is Coming!

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Across
  1. 2. A constellation that is shaped like a winged horse
  2. 3. a star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.
  3. 5. A phenomena that keeps the planets in steady orbit around the sun
  4. 7. A constellation that represents a hunter and weapons
Down
  1. 1. The center of the Milky Way Galaxy
  2. 2. A place where you go to see projections of the night sky
  3. 4. The path traveled by a celestial body in space
  4. 6. The planet in our solar system known as the Morning Star