Across
- 4. Billions of stars.
- 7. a very famous German scientist and inventor.
- 8. a very big star.
Down
- 1. An explosion than happened billions of years ago.
- 2. Mercury, Venus,Mars, Jupiter are...
- 3. the plantet that we live in .
- 5. adjective.The Universe is ...
- 6. name of a galaxy that contains 300 billions stars.