Across
- 2. the surface of a black hole
- 4. the amount of matter a object contains
- 6. massive star that runs out of fuel and collapses
- 9. "Unicorn" is the _____ blck hole to earth being 1,000 light years away
- 11. causes a supernova
Down
- 1. 2 stars with the same gravity
- 3. pulls so much that light cant escape
- 5. enter of a black hole
- 7. the mass of the sun
- 8. used to help detect black holes
- 10. how much a object takes up