Inspired by xkcd's Up Goer Five, I attempted to explain my research using only the ten hundred most common English words. It was pretty hard.
I try to find out what caused the beginning of everything. We think we know what happened back in time until almost the beginning. We know it was very hot then and that everything was moving away from everything else very fast. We have a good idea that explains how it got that way. The idea is called "inflation."