How to Form a Star

To form a star, you need gas that's cold. It can't be too hot because hot gas means the particles are flying around at really high speeds. Sometimes like a nearby supernova will give a little push to some of these things and collapse them in a way that gets gravity started. We also need some sort of seed. And that can come in the form of like having a dense little blob of some metal formed in the heart of another star and then left out in the cosmos to seed another star or some sort of like shockwave.