nutshell:<p>> "Lemaître talks in great length about his rival Sir Fred Hoyle, an English physicist who was one of the best-known and fierce proponents of the Steady State model but who also accidentally coined the term "Big Bang." Although he repeatedly calls out Hoyle for being wrong during the interview, Lemaître remarks that he has the "greatest admiration" for his colleague's work.<p>> Lemaître explains that the Steady State model could work only if the hydrogen required to make stars appeared "like a ghost" from nowhere, which he argued would go against the principle of conservation of energy, the idea that energy is neither created nor destroyed, only transformed from one type to another, which he described as "basically the most secure and solid thing in physics."<p>> "Instead, Lemaître argues in the video, the expansion could be traced back to the "disintegration of all existing matter into an atom," which created "an expanding space filled by a plasma" via a "process that we can vaguely imagine."<p>I like the image presented by Iain M. Banks in Excession of 'cosmic fireballs' generating successive Big Bangs one after the other in an infinite series to be kind of interesting, each one expanding outwards like concentric shells of an onion (in a sort of 2D model), resulting in a succession of stacked universes, not sure if that's at all valid or plausible (timing seems to be an issue).