The Final Frontier

Edit Answers
12345678910
Across
  1. 3. The layer of gases around Earth.
  2. 4. A person who travels in space.
  3. 6. Bright objects in the sky that are made of gas and light.
  4. 7. A vehicle that travels in space.
  5. 9. A long trip from one place to another.
  6. 10. A boundary about 100 kilometers above Earth, marking the start of space.
Down
  1. 1. A special task or job, especially one with a goal.
  2. 2. The curved shape of something.
  3. 5. The part of the universe beyond Earth where stars, planets, and moons exist.
  4. 8. A fun or exciting experience.