Schwarzschild Radius ·
Event Horizon
un
seel
.com · r
s
= 2GM/c
2
· 1916 · point of no return
r
s
—
Mass
M
phase
—
Event horizon (r
s
)
Photon sphere (1.5 r
s
)
ISCO (3 r
s
)
Light rays
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.com · Schwarzschild Radius