Pi Man

Regarding the curvature of space, you are also right that there are a lot of references going every way, the latest confirmation was from looking at the thermal background radiation. This is a bit fuzzy to recall, think it was in my Science News about 3 months ago that asserted that space is flat. Space is presently flat. But if the expansion is decelerating there is a curvature but since it is uniform, straight lines stay straight. It is only in another dimension (something you alluded to earlier which means we may have a common ground) that this change can be properly described. x,y,z and t are not enough. (I use two dimensions of time.)

snowflake