Black Holes

2. - A unit of distance used in astronomy to describe the scale of galaxies.
5. - Black holes can spin, altering their properties.
6. - How it behaves near a black hole is affected by relativity.
7. - The electromagnetic waves that cannot escape a black hole.
9. - The particle of light that cannot escape a black hole.
10. - High-speed particle streams emitted from the vicinity of black holes.
14. - A spinning neutron star that can be a source of information about black holes.
17. - A puzzling aspect of what happens to information in a black hole.
19. - A black hole with a mass millions or billions of times that of the Sun.
22. - A rotating black hole solution to Einstein's equations.
23. - Many black holes are found at the centers of these.
25. - Black holes are nearly invisible, even on the darkest of these.
26. - Instruments used to observe black holes indirectly.
27. - Theoretical physicist who described black hole radiation.
28. - The boundary beyond which nothing can escape a black hole.
29. - What gets crushed to form a black hole.
30. - A point of infinite density at the center of a black hole.

1. - Detecting black holes is a challenge due to their lack of visible light.
3. - The force that causes objects to be pulled into a black hole.
4. - A key question in black hole physics is what happens to this.
8. - The scientist who coined the term "black hole."
11. - A black hole formed from the core of a massive star.
12. - A principle stating that black holes have just a few properties.
13. - A very bright and energetic object powered by a black hole.
15. - The bending of space-time around a black hole.
16. - Einstein's theories that describe the behavior of black holes.
18. - High-energy radiation emitted by matter falling into a black hole.
20. - The stretching of an object as it approaches a black hole.
21. - The speed required to break free from a black hole's gravitational pull.
24. - The process of matter falling into a black hole.