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