BLACK HOLES - THE BASICS

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Across
  1. 2. - Radiation theorised to escape from black holes, named for its predictor
  2. 5. - Type of black hole with mass millions to billions of times the Sun
  3. 8. - The ___ of time - clocks run slower in strong gravity
  4. 10. - The process by which matter spirals into a black hole
Down
  1. 1. - Scientist who calculated the radius of a black hole in 1916
  2. 3. - A quasar is the active ___ of a galaxy
  3. 4. HORIZON - The boundary of a black hole from which nothing escapes
  4. 6. - The tidal stretching effect near a black hole
  5. 7. - The singularity at a black hole's centre
  6. 9. - A rotating black hole is described by the ___ metric