[Hajman]

It's exactly the three-dimensional concept that makes it troublesome. If the "bubbles" exist in the water of space-time, this bubble image implies a three-dimensional globe with the interior volume actually creating the bubble-image rather than a solid. billiard-ball image.

Why would there have to be nothing? Think of an underwater wave. The underwater wave would be, possibly, less dense, more spread out, created with vibrations. A 'bubble' in the water. This is how I think of space. But in space's case, space might actually keep it's density and gain space-mass (of whatever type that happens to be), thus gaining more space at that place. A 'bubble' in space/time. It wouldn't have to blow up like a balloon.

-The Hajman-

[henbane]

. . .space might actually keep it's density and gain space-mass (of whatever type that happens to be), thus gaining more space at that place. A 'bubble' in space/time. It wouldn't have to blow up like a balloon.

This makes sense. The "bubble" here is not the conventional bubble that comes from the bubble-pipe and floats in the air or the kind that comes up from the bubbler in the fish-tank.

Sounds like the image used in physics of the expanding space-time universe that "bubbles" like the raisin cake cooking in the oven--the cake dough expands but keeps its weight/density while all the raisins in it simultaneously move away from each other.

IOW, there is no "empty" volume as in the center of the conventional iridescent bubble floating through the air.

Think I've got it. Thanks.