Across
- 3. the point at the center of the star
- 4. part of the light spectrum, comes after ultraviolet
- 5. pull of a star's gravity causing it to shrink
- 7. when atoms are joined to create energy
- 8. a gravitational field so intense that no matter or radiation can escape
- 11. the huge space that contains all matter and energy
- 15. an explosion of a star
- 17. subatomic particle with a negative charge
- 18. a very dense star
- 20. the distance surrounding a black hole where nothing can escape
Down
- 1. the electrical and magnetic forces or effects produced by an electric current
- 2. a system of 2 stars orbiting each other
- 6. created the theory of general relativity
- 9. an expert in or student of astronomy
- 10. the force that attracts a body toward the center a physical body having mass
- 12. person who first coined the term black hole
- 13. black hole feeding on gas at the center of a distant galaxy
- 14. subatomic particle with a positive charge
- 16. branch of science that deals with celestial objects, space, and the physical universe as a whole
- 19. extremely hot and dense center of a star