Stars often die with a final burst of beauty. For the first time, astronomers have captured visual proof that a star can explode not once, but twice before fading forever. Using the European Southern ...

First, after watching the last Mathologer video mathematician Rainer Lang sent me his visual proof of Ptolemy’s theorem. In my opinion Rainer's new proof is the simplest and most powerful visual proof ...

Back when a single picture was worth a thousand words, the term visual proof carried critical weight, except for those who had read Shakespeare. Othello overthrew himself by demanding visual evidence ...