hey, just have a general question about gravity; hopefully it isn't too basic a question. Also, please excuse the crudeness of my descriptions. Am I right in saying that there are 4 main "forces" in the universe; the weak & strong atomic forces; electromagnetism; and gravity? Am I also right in saying that the weak and strong atomic force, as well as electromagnetism, are seen to be, in some resepct at least, manifestations of the same force? I'm just wondering is gravity seen as a manifestation of this same force?