Alas, our hopes of developing a set of universal laws in relation to the fundamental physics that governs our universe—of coming up with a “theory of everything”—are looking more and more dim. Physicists have just found more compelling evidence implying that gravity, which determines how massive objects impact the fabric of spacetime, just doesn’t honor the laws of quantum physics, which governs the world of the very, very small.

To break this down, the biggest challenge in modern physics is finding some form of agreement between classical physics and quantum physics. In an attempt to connect the two, a team of Chinese scientists from Huazhong University of Science and Technology in Wuhan recreated one of Galileo’s experiments. Specifically, they were working with the equivalence principle, which asserts that objects of the exact same mass will follow the exact same trajectory if they fall in a vacuum.

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