Across
- 5. a shock wave travels outward exploding
- 6. happens from heat and denseness star runs out of fuel
- 8. the distance light can travel in one year
- 9. high-mass stars or those more than eight times the mass of the Sun
- 10. a pattern of stars
- 11. star begin as a large cloud of gas and dust
- 12. how the universe all started
- 14. round or flatten balss and old stars only
Down
- 1. outer layers returning to gas and dust while the interior collapses
- 2. a region where nothing can escape from not even light
- 3. measure of the amount of light a star gives off
- 4. measure of the amount of light received on earth
- 5. is a collection of the Sun, eight planets and their moons, comets, asteroids, meteoroids
- 7. dense that one tepsoon would weight more than 600 million metric tons on earth
- 13. a huge group of single stars