General Relativity
Scientists are proposing a method to test Einstein's general theory of relativity by analyzing high-resolution images of black hole shadows. Their new simulations suggest that future telescope advancements could reveal if alternative gravity theories hold true. The work, led by researchers from Goethe University Frankfurt and the Tsung-Dao Lee Institute, appears in Nature Astronomy.
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A University of Saskatchewan physicist argues that spacetime does not exist as a physical entity but serves as a model for describing events. Treating events as existent objects leads to philosophical confusion and misconceptions like time-travel paradoxes. This view aims to bring clarity to physics and philosophy by distinguishing happenings from existing things.