Franco

What is gravity? Most would say it is a force. I'm not a scientist,physicist or anything like that just a normal person with lots of questions to ask and this is one that I ask a lot. Gravity is the after affect that mass has on the fabric of space-time. This is what I think gravity is. The universe is on a 2 dimensional plane so mass creates gravity that then creates the 3Rd and 4th dimension space-time. So if there is mo mass is there no space-time? It's just a question I'm asking hope you all understand what I mean because I can't fully explain. It can be hard to put in writimg what your thinking so please tell me where I might be going wrong with my idea's and thanks to all that reply