Could someone help me understand the four fundamental forces? I'd like to set up a thought experiment as well: Let's break up our solar system into individual atoms, and create a gas cloud about the size of our solar system. All things like they are, the gas should slowly come together, and form something similar to what we have, right? Now, in an effort to understand dark matter, along with what the fundamental forces do, what happens if we individually take away one of the fundamental forces from the gas? How will the cloud evolve over time? Such as, without electromagnetism, is it possible for a star or planet to form? What do the strong and weak forces do? How will the matter change as we remove a fundamental force? I know this may not be the best approach, but maybe you can help me find a better way to think about it? Thanks for your time!