Science Crossword

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Across
  1. 3. All existing matter and space
  2. 4. A gravitationally bound system of starts
  3. 6. Element with atomic number 2
  4. 9. German Physicist best known for coming up with the theory of relativity and helped contribute to quantum mechanics
  5. 10. Element with atomic number one
Down
  1. 1. Scientist with a telescope named after him
  2. 2. determined that the laws of physics are the same for all non-accelerating observers
  3. 5. relating to the universe
  4. 7. created along with matter when the big bang occurred
  5. 8. what we are all made of