Zack Johnson is one of the Big Bang Theory characters who didn't have much screen time and is a little difficult to place.

"The Big Bang Theory" spans 12 seasons and the same number ... another weird Leonard and Penny subplot where her ex-boyfriend Zack (Brian Thomas Smith) offers her a job, a prospect that makes ...

The Big Bang Theory explains how the universe began. The Big Bang Theory stands as the most widely accepted explanation for the origin of the universe. According to this theory, the universe began ...

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 ...