Stars, matter in general, shapes space. So say all of us since Einstein.
The imagery deployed draws a depression in a flat plain.
This is the best imagery to represent a 3d space distorted in a 4d direction. Read again please,
Now come-on, lets keep it simple. The depression in the flat plain (3d space) has depth in the direction of time (supposed to be the extra dimension).
The universe expansion is accelerating (they say) so the comparative depth of the depression must be increasing. Therefore the gravity associated with the depression must be increasing...... oops
In other words at the bottom of the depression time will lag (be less than at the level of the plain).
Hey, people I'm thinking out loud here... WE know that time runs slowly (slower) near large mass/large gravity/large depression well large or small. This is a *rate* not just a lag!! I mean the deeper the depression (larger the mass) then the slower time will run (from outside looking in at something). AND the faster time will go looking out at something - comparatively.
The deeper the depression the greater the effect. If the depression is gradually getting deeper then the plain will appear to be accelerating... Accelerating expansion of the universe?