quote:
In order to observe it's alleged curvature, the only thing anyone would be capable to observe are things in space. Right? It is impossible to see, feel, analyze or measure space itself. From what you've said it appears that any observation, analysis or measurement of it must be done relative to things in it, for you have not come up with anything intrinsic in it having the capabability of analysis of it. Your definition of space appears to be so far boiling down to curved and expanding area consisting itself of nothing definitive in which things exist. To my knowledge we have no curved or expanding model of anything that cannot be defined.
I'm not speaking for Sylas, but I thought of a way to explain this that might clear up a few things. We can observe the properties of space in the same way that we observe gravity. We can't see gravity, and gravity is not made up of anything. It is a force. However, we can observe gravity by the way particles or masses act inside a gravitational well. In the same way, we can observe the characteristics of space-time by the way that things behave within it.
The expansion of space has resulted in a globe with flat sides. I can't think of an analogy or a better way of explaining it. Needless to say, physics defies common sense.