Part 2/10:
Alice and Bob are not your conventional astronauts. Instead, they are the epitome of explorers in the abstract territory of theoretical physics. Their mission is clear: to challenge our understandings through thought experiments, or gedankenexperiments, whose purpose is to probe the contradictions lying at the core of our theories. Their latest expedition sees Alice suited up and ready to jump into Sagittarius A*, the supermassive black hole at the center of the Milky Way.