Could we harness energy from black holes?
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fairly difficult
Study indicates that energy can be extracted from black holes
Research News

Could we harness energy from black holes?

A new study indicates that, someday, energy could be extracted from black holes.

January 19, 2021

A remarkable prediction of Einstein's theory of general relativity -- the theory that connects space, time and gravity -- is that rotating black holes have enormous amounts of energy available to be tapped.

For the last 50 years, scientists have tried to come up with methods to unleash this power.

Now, in a U.S. National Science Foundation-funded study published in Physical Review D, physicists Luca Comisso of Columbia University and Felipe Asenjo of the Universidad Adolfo Ibáñez in Chile have found a new way to extract energy from black holes by breaking and rejoining magnetic field lines near the event horizon, the point at which nothing, not even light, can escape a black hole's gravitational pull.

"Black holes are commonly surrounded by a hot 'soup' of plasma particles that carry a magnetic field," said Comisso.…
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