Introduction The Andromeda Paradox is a thought experiment proposed by physicist Roger Penrose to demonstrate a strange consequence of Einstein’s special theory of relativity: that different observers can disagree on what is happening right now, even at galaxies millions of light-years away. The paradox isn’t a contradiction, but rather a counterintuitive implication of how time and simultaneity work in relativity. The Thought Experiment Imagine two people walking slowly past each other o...
