Black-hole dynamic laws
First law of black hole dynamics:
For interactions between black holes and normal matter, the conservation laws of mass-energy,
electric charge,
linear momentum, and angular momentum, hold.
This is analogous to the first law of thermodynamics.
Second law of black hole dynamics:
With black-hole interactions, or interactions between black holes and normal matter,
the sum of the surface areas of all black holes involved can never decrease.
This is analogous to the second law of thermodynamics,
with the surface areas of the black holes being a measure of the entropy of the system.

Wormholes
A wormhole in space (also known as a Einstein-Rosen Bridge,
named for Albert Einstein and Nathan Rosen) is a mathematical solution to Einstein's theory of General Relativity.
A Lorentzian wormhole would theoretically provide a shortcut through widely-separated parts of space-time,
through a black hole and out of a white hole (moving faster than the speed of light).
Many physicists believe that wormholes have no physical reality because wormholes require "exotic matter," matter which is repelled by gravity
(rather than attracted by it).
John A. Wheeler coined the term wormhole in the mid 1950s.

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