Attention Big Bang Theory writers. We know that Sheldon and Leonard, as our theoretical physicists on the show are often more involved in the physics surrounding black holes (hence their relationship with an astronomer and NASA engineer) but here’s something from real world of theoretical physics that all the boys would be interested in: time crystals.

Not the things from video games that let you travel through time, but perpetual motion crystals; crystalline structures that exist not only in three dimensions, but four. The math has been done, they’re theoretically possible. Now we just need to discover (or create) one.