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Space

Quantum nature of gravity may be detectable with gravitational waves

By Leah Crane

30 August 2021

Gravitation waves around black hole in space 3D illustration

An illustration of gravitational waves around black hole

Getty Images/iStockphoto Source: iStockphoto

We may finally have a way to detect the quantum nature of gravity.

The question of how gravity and quantum mechanics fit together has been one of the biggest problems in physics for decades. The way that quantum fluctuations affect gravitational waves – ripples in space-time caused by the movements of massive objects – may give physicists a way to solve it.

Gravity is the one realm of physics that doesn’t currently fit into a quantum mechanical understanding for the universe. “Our fundamental physical theory is currently incoherent: it is…

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