Are Those Aliens? vocab

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Across
  1. 5. A smaller body that revolves around a planet
  2. 6. Wild activity or excitement
  3. 7. Coming from outside our planet
  4. 8. Far away
Down
  1. 1. Scientists who study stars, planets, and space
  2. 2. Stories people tell that are usually not true
  3. 3. Very large groups of stars that make up the universe
  4. 4. Studied closely and carefully