Well, I goth both answers wrong and the lecture to pay attention. Certainly deserved that. Thankfully the lesson being on the Big Bang theory, I know a lot about that too from reading astronomy books for fun. Oichi raised her hand and responded, "The first step after the Big Bang is called Planck epoch. In this time gravity was believed to be in equal force as every other force on Earth. It is basically a time when the universe is a hot dense of molten energy that is incredibly unstable as evolution happened out of the blue because there was no force to hold it back. Toward the end of the Planck era it is said gravity starts to gain and exceed all other forces on Earth by a tiny margin shaping the direction of the next steps in the evolutionary process.".