Black Hole

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Contents
Black hole 2
Contents 5
History 7
General relativity 8
Golden age 9
Properties and structure 11
Physical properties 12
Event horizon 14
Singularity 16
Photon sphere 18
Ergosphere 18
Formation and evolution 19
Gravitational collapse 20
High-energy collisions 22
Growth 24
Evaporation 24
Observational evidence 25
Accretion of matter 26
X-ray binaries 28
Galactic nuclei 31
Effects of strong gravity 33
Alternatives 34
Open questions 35
Entropy and thermodynamics 35
Information loss paradox 37
What Is a Black Hole? 39
Black Holes: Facts, Theory & Definition 44
Stellar black holes — small but deadly 45
Supermassive black holes — the birth of giants 45
Intermediate black holes – stuck in the middle 46
Black hole theory — how they tick 47
Interesting facts about black holes 49
10 Amazing Facts About Black Holes 50