Gravity and quantum mechanics are two theories that have been tested with extreme precision. The problem is that they're incompatible with each other. Theorists have proposed that quantum gravity could be the bridge between the two, but it hasn't been experimentally tested yet. In a new study, researchers propose that ultra-high energy neutrinos passing through the IceCube observatory in Antarctica could show the influence of quantized gravity on spacetime.
https://www.uta.edu/news/news-releases/2024/05/02/uta-scientists-test-for-quantum-nature-of-gravity