(June 17, 2017 at 5:52 pm)Rhondazvous Wrote:(June 17, 2017 at 4:09 pm)Alex K Wrote: Distances are stretched through the expansion of space. It's as if space itself is stretched..You can think of it like ants walking on a rubber band that is being stretched.
Two separate ants will move away from each other through the stretching, but the ants themselves keep their length because they are held together by forces which are not changed by the expansion of the rubber beand.
Likewise, in space, all objects which are held together by forces such as gravity or electromagnetism will resist this stretching and keep their sizes because their size is determined by these forces at work in or between them. Two distant objects which are not e.g. bound by gravitation will not have anything compensating the stretching of the space in between and their distance will increase.
Understood. But apart from gravity and the em force, inertia will still require two objects to maintain their distance unless some outside force causes them to accelerate. Does this suggest a multiverse?
BTW, did you see my last question in the thread about symmetry breaking?
No. There is no inertia to overcome - because universal expansion doesn't actively move objects apart in physical space, it is just space itself becoming more. This is where the rubber band picture fails.
No I haven't...
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition
