Hey all, Thought I'd post this here as it is a little tricky trying to get a straight answer from the boys and girls of theory over at the GR/SR section without causing havoc of some kind. It seems to be fairly well accepted that space-time is curved. So maybe someone here can answer the question of has this been proved without doubt? And I'm talking proved not by maths or theory - but physically and factually. Too many answers to difficult questions are 'solved' by maths to make sure it fits neatly with a given proposal. Personally, with certain things, I don't abide by that rule. I like to know what physical proof there is. Roo.