Crossword Puzzle

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Across
  1. 3. to be lifted from the planet and then to a journey into space
  2. 5. the brightest planet in the sky
  3. 7. any vehicle that fliest in space
  4. 13. layer of gases that covers a planet, start, or moon
  5. 15. a streak of light that is seen in the night sky and disappears
  6. 16. Looks like a red star in the night sky
  7. 17. third planet from the sun
Down
  1. 1. a natural object that travels around a planet in space
  2. 2. the galaxy in our solar system is located
  3. 4. the center of the planet, star, or moon
  4. 6. imaginary line around the middle of a planet
  5. 7. the plants, moons, the sun, and anything affected by the sun's gravity
  6. 8. a ball of dusty ice that orbits the sun
  7. 9. the planet that lies on its side
  8. 10. the whole space and everything in it
  9. 11. last planet discovered
  10. 12. force that pulls objects toward each other
  11. 14. closest planet to the sun