Physicists link two time crystals in seemingly impossible experiment
This article perfectly bookends my abandoned physics degree.1. This reminds me a bit of the delayed-choice quantum eraser, which is one of the weirdest scientific outcomes and is the sort of thing that inspired me to pursue a physics degree. It implies a certain kind of time travel is possible, in the sense that in the present moment we can cause some past moments to collapse.2. As my TA, Frank Wilczek successfully scared me off that physics degree by simply being so smart and having complicated things come so easily to him. Being confronted with the kind of horsepower needed to be successful in academic physics was eye-opening.