22. Outer Space

123456789101112131415
Across
  1. 3. A huge group of stars, gas, and dust held together by gravity.
  2. 5. A natural object that orbits a planet.
  3. 7. A person trained to travel and work beyond a world's atmosphere.
  4. 8. A tool that makes distant objects in the sky appear closer and bigger.
  5. 10. The star at the center of our solar system that gives us light and warmth.
  6. 11. Everything that exists, including all the space, matter, and energy.
  7. 14. A small, icy body that orbits a star and develops a bright tail when it gets close.
  8. 15. A small, rocky object that orbits a star, usually found in a belt.
Down
  1. 1. The spiral-shaped collection of billions of stars where our solar system lives.
  2. 2. A large, round object that orbits a sun.
  3. 4. A group of worlds, moons, and other objects that all travel around one central star.
  4. 6. A streak of light seen when a space rock burns up in a world's air.
  5. 9. The curved path one object takes around another in space.
  6. 12. A vehicle that uses powerful thrust to travel into a vast emptiness.
  7. 13. A huge ball of burning gas that gives off light and heat.