While her full name has not been revealed throughout the series, Penny ends up taking the name Hofstadter after marrying Leonard.

The Big Bang didn't emerge from a particular location ... begrudgingly — made the unfortunate mistake of adopting a name for the theory that even evokes the sound of a gunpowder blast.

People talk about the universe starting with a Big Bang, but how could we possibly know anything about an event that happened billions of years ago – before our planet was even formed?

Others took notice and named his theory "big bang." LeMaitre's ideas opened more questions, many of which forced physics and astronomy together: What was that primordial atom like? Why would it ...