First-of-a-Kind Experiments Demonstrate Effects of Einstein’s Gravity in the Quantum World Christopher Plain·September 3, 2026New experiments designed to explore the boundary between Einstein's theory of gravity, and the quantum world achieved a history-making result.
Could the Equivalence Principle be Wrong? New Measurements Put Einstein’s Theory of Relativity to the Test Micah Hanks·July 19, 2023Researchers have used a half century of lunar ranging data to test the equivalence principle, one of the core principles of modern physics. Here's what they found.