ACROSS THE UNIVERSE

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Across
  1. 3. Instrument for observe the sky
  2. 5. Our is composed by planets, stars, satellites, ecc.
  3. 7. Lights in the sky
Down
  1. 1. It's our planet
  2. 2. Person who study stars and the universe
  3. 4. Mercury, Mars, Venus are...
  4. 6. It hot, Yellow and very big
  5. 7. It's up there, blue or light blue