Hello there. I'm new to the forums obviously. And I'm also quite new to physics. I've read many existing answers about how this works but I can't really understand how it would logically work out. From what I've understood. Gravity is not a force. Objects move in a straight line unaltered by other forces and space is curved around the gravity source which leads to the change in trajectory of light and objects. If I've understood this correctly, it doesn't make one bit of sence in my head. Here is an image I put together to explain my confusion. http://img407.imageshack.us/img407/4609/gravity.png [Broken] All this tells me is that the object is bigger than what it appears to be in the graph. Also: Since objects move in a straight line. Shouldn't light have the exact same trajectory alteration around a gravity source as an object? Thanks in advance! Edit: Hmm, this should probably be under General Relativity.