Astronomy › Section R · Black holes and curved spacetime › Topic R.3
Black holes
If a collapsing core is too heavy even for degenerate neutrons, nothing can stop it. It shrinks inside a boundary from which not even light escapes, leaving a black hole: the simplest, strangest object general relativity predicts.
In this topic
- When nothing can stop the collapse
- Dark stars and black holes
- Worked example: the Schwarzschild radius
- The event horizon
- Worked example: a giant black hole
- Not a cosmic vacuum cleaner
- Time near a black hole
- Spaghettification
- Simple outside, mysterious inside
- Common mistakes to avoid
- Key takeaways
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