Across
- 5. depressions that draw objects
- 6. shortest wavelengths
- 8. attractive force btwn any two bodies
- 9. point in the center - infinitely dense
- 10. we compare black holes as ____
- 12. Einstein's Theory of ______
- 14. distance light travels in a year
- 17. a star 8x mass of Sun explodes
- 19. needs to exceed speed of light
- 20. accumulation of small objects
Down
- 1. has a mass billions times the sun
- 2. tunnel in black hole
- 3. groups of billions of stars,gas,and dust
- 4. black holes have ____ gravitational pull
- 7. two stars orbit each other
- 11. "point of no return"
- 13. nothing can escape it
- 15. used to detect black holes
- 16. time_____ near black holes
- 18. explosion of a star