Space

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Across
  1. 5. The first American in space.
  2. 6. A product developed for space but useful on Earth.
  3. 8. A space rock that survives impact on Earth.
  4. 9. The leading scientific explanation of the universe's origin.
  5. 13. A collapsed star with strong gravitational pull.
  6. 14. A group of stars forming a recognizable pattern.
  7. 15. A person trained to travel in space.
  8. 16. The Sun and all celestial objects orbiting it.
  9. 17. The first person to walk on the Moon.
Down
  1. 1. The galaxy that contains our solar system.
  2. 2. A famous cosmologist and physicist.
  3. 3. The distance light travels in one year.
  4. 4. The force of attraction between masses.
  5. 7. The study of the universe’s origin and evolution.
  6. 10. A telescope in Earth's orbit.
  7. 11. When one celestial body moves into the shadow of another.
  8. 12. The first human in space.