National Planetarium

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Across
  1. 4. A space rock that becomes bright when it enters Earth's atmosphere.
  2. 5. An instrument used to observe objects that are very far away in space.
  3. 7. A huge group of stars, gas, and dust held together by gravity.
Down
  1. 1. Everything that exists, including stars, planets, galaxies, and space.
  2. 2. The study of stars, planets, and other objects in space.
  3. 3. A large object that travels around a star, such as Earth.
  4. 6. A huge object in space that produces its own light.