Across
- 4. The galaxy we live in
- 6. this is made up of all matter and space that exists
- 8. Created the theory of relativity to give us a better understanding of gravity
- 10. Leftover of the Big Bang 14 billion years ago
Down
- 1. This scientist realized galaxies are moving away from each other
- 2. The most commonly accepted theory of how our universe was created
- 3. The universal force of attraction acting between matter
- 5. They moved, combined, expanded and cooled to form the objects in the universe
- 7. Used to study light
- 9. A system of millions or billions of stars, held together by gravitational force