I’ve always wished I had more time to dive into the intricacies of observational astronomy. I want to understand mechanisms that seem too absurd to reason about. What are the margins of error in our knowledge? What does it mean to have an acoustic wave in the early baryonic universe (Baryonic Acoustic Oscillation)? What does it mean to have an inflation of space itself happening everywhere at once (Cosmic inflation)?A common version of the Big Bang theory goes like this: In the beginnin