Across
- 3. force of attraction between masses
- 4. The expanse where celestial bodies exist
- 5. dense remnant of a low to medium mass star
- 6. sudden brightening in a binary system
- 9. large hot and luminous star
- 10. stage of hydrogen fusion in a stars core
Down
- 1. region with inescapable gravity
- 2. massive star explosion
- 7. star nursery cloud
- 8. expanded cooler star after the main sequence