So I'm 16 and just starting to get into relativity. When I learned that bodies of mass bend space time, that got me thinking. So I was wondering whether space-time is sort of like rubber. Can it be stretched? Or is it more rigid and pulled from the outside, like a trampoline. I know this might be a bit of a stupid question but I'm reading A brief history of time right now and my brains kind of overloaded with a lot of new ideas. If it is stretched, this raises another question. When it comes to time dilation, is time slower when its closer to a large mass because space-time is being stretched more? And why is it that we get pulled towards the earth (in terms of space time being warped). I understand gravity in orbits, but not in things such as throwing an apple in the air. Could anyone clarify this to me?