Born today was Alan Guth.
Atomic physicist, forsooth.
And a prominent Big Bang sleuth.
Too abstruse for me, in truth.
"More recently, Guth has expressed his belief that our universe is just one of many universes that came into existence among countless others as part of a multiverse. According to this theory, cosmic inflation never ends, but continues expanding at an exponential rate, with additional universes being created all the time as "bubbles" within the inflation process (in some ways similar to Fred Hoyle’s discredited steady-state theory). He believes that the entire cosmos was created by quantum fluctuations from nothingness (which he argues is perfectly consistent with the Law of Conservation of Energy because its total energy value remains zero), and is quoted as saying that “the universe is the ultimate free lunch”.[physicsoftheuniverse.com]