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