hey so ive had this idea running through my head for a while now if relativity is true then spacetime has to have mass and if does then what is it made of? if it has mass then why cant we see it? why dont we know tis there? i believe that it is a simple solution. it is dark matter plain and simple. dark matter is not just dark matter but gravity and gravity is dark matter its similar to spacetime where space and time are not seperate but one and the same. just like dark matter and gravity. not diffrent but the same. and so it makes alot of sence why we have trouble finding dark matter. and the only reason we really know its there in the first place even though its invisible is that it distorts light but i think it dosent distort light tlike glass or anything like that i think the idea of dark matter is not correct. because it is not matter at all but just a high concentration of gravity in a single area. so if u think of it like that spacetime if it is dark matter then its actually just gravity and so gravity is spacetime.
