To jump on the bandwagon, here is my research, described using only the 1000 most common English words. It would have been nice if “Mars”  and “Laser” and “Robot” were available:

I study the number four rock that goes around the sun. I use a car that drives around on that big rock and uses a very strong light to tell what it is made of. I also look at pictures of the number four rock as seen from space and try to say if it was nice to live there a long time ago.

I strongly encourage you to take a look at this compilation of other research descriptions, or try to explain your own work. All of this was, of course, inspired by the Up-Goer Five comic at xkcd.