It's amazing how culturally rich one's life can be without super hero movies or other expressions of pop culture. And if you hear a reference that you want to understand, Google can usually explain it. And while the fictional astronomical universe can be amusing, you have the ability to look at, understand, and teach about the real astronomical universe.
Nerd or geek are words used by people whose imagination is so limited that they think humans can be understandable by reducing them to a classification.
Meanwhile, they make a big deal about the Big Bang -- as if that were the beginning.