Echoes in gravitational wave signals suggest that the event horizon of a black hole may be more complicated than scientists currently think.
Research from the University of Waterloo reports the first tentative detection of these echoes, caused by a microscopic quantum “fuzz” that surrounds newly formed black holes.
Gravitational waves are ripples in the fabric of space-time, caused by the collision of massive, compact objects in space, such as black holes or neutron stars.
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