Across
- 4. Total sum of all matter and energy
- 6. The closest visible star to earth
- 7. Not moving, space is expanding
- 8. Created in clouds of dust and gas
- 9. The largest known star
Down
- 1. The hottest stars
- 2. An average star
- 3. Make up the universe about 70%
- 5. about 100000 light years in diameter
- 10. Cannot travel through a vacuum