A new theory of quantum gravity could explain the biggest puzzle in cosmology, study suggests

image via Space.com

May 27, 2024, 4:00 PM

• •A new theory of quantum gravity could help solve the puzzle of the universe's expansion.
• •The theory incorporates quantum effects into one prominent theory used to determine the expansion rate.
• •The theory could be tested experimentally by studying the properties of the cosmic microwave background.

A new theory of quantum gravity could help solve the puzzle of the universe's expansion. The theory incorporates quantum effects into one prominent theory used to determine the expansion rate. This could resolve the discrepancy between different measurements of the expansion rate, called the Hubble tension.

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