Space

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Across
  1. 2. The 4th planet from the sun
  2. 4. Traveling through an untamiliar area in order to lear about it
  3. 5. A bright circle seen around the sun or the moon
  4. 7. A person who travels in space
  5. 9. A 2nd planet from the sun
  6. 10. The Planet closest to the sun
Down
  1. 1. The line where the earth or sea seems to meet the sky
  2. 3. The upper layer of the Earth's atmosphere
  3. 6. The scientific study of stars, planets, and other objects in outer space
  4. 8. All of space and everything in it including stars, planets, galaxies, elc