Black Holes by Ava Heaton

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Across
  1. 1. the most powerful AGNs in our Universe
  2. 4. thought to have been created during the early Universe
  3. 8. two objects in orbit around each other
  4. 11. an explosion of a star that causes the star to shine a million times brighter than before
  5. 13. steams that have the power to accelerate electrons almost to the speed of light
  6. 14. a spiral of gas that can surround a black hole
  7. 15. the point at the center of a black hole
  8. 16. a very dense star made up of neutrons
Down
  1. 2. the result of massive dying stars
  2. 3. the shrinking of a star caused by the pull of its own gravity
  3. 5. the speed at which an object must travel to escape the gravitational pull of another object
  4. 6. a process where atoms are joined and tremendous amounts of energy are released
  5. 7. the huge space that contains all the matter and energy in existence
  6. 9. the distance from the singularity to the event horizon
  7. 10. what scientists call the "boundary" of a black hole
  8. 12. the spherical distance surrounding a black hole out of which nothing can escape