space vacations

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Across
  1. 3. people trained to travel and work in space.
  2. 4. the air, water, land, and living things around us.
  3. 8. people who know a lot about a certain subject.
  4. 10. things that happen to you or that you do.
  5. 12. likely to cause harm or injury.
  6. 13. an exciting and sometimes risky experience.
  7. 14. tools or machines needed for a job or activity.
Down
  1. 1. tests done to learn or discover something new.
  2. 2. traveling for fun or vacation.
  3. 3. to understand how good or special something is.
  4. 5. people who go from one place to another.
  5. 6. an important job or trip, often done by a group.
  6. 7. to make something dirty or harmful, especially air or water.
  7. 9. the force that pulls things toward the ground or Earth.
  8. 11. strength or energy that makes things move or work.