"We show that it can explain the expansion of the universe and galactic rotation curves without the need for dark matter or dark energy," Oppenheim said on X. "We do urge caution, however, since there is other indirect evidence for dark matter, so further calculations and comparison with data are needed. But if it holds, it would appear that 95% of the energy in the universe is due to the erratic nature of spacetime, signalling either a fundamental breakdown in predictability of physics, or we are immersed in an environment which does not obey the laws of classical or quantum theory."
Not everyone is convinced, including the well-known theorists Prof Carlo Rovelli and Prof Geoff Penington, who have signed a 5,000:1 odds bet with Oppenheim against his theory being proven correct.
"I think it's good that physicists explore a wide variety of approaches to very difficult problems like combining quantum mechanics with gravity," said Penington…
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