Scientists experimenting on a tiny particle called a muon might have discovered evidence that a new and unknown fifth force of nature exists.

Pym Particles played a large role in the Avengers: Endgame movie, as they took the team back in time to steal the Infinity Stones. We reveled in their efficiency and usability in this situation, daydreaming about the things we might have gone back in time to fix within our own timelines. We know the Pym Particles came into play during the Ant-Man movies, but we had so many questions about them that the Avengers: Endgame movie failed to explain.