Space

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