Quote:
Originally Posted by evman150
Awesome MS Paint Illustration
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Lol nice!
So here's a question, things like gravity, atomic forces, etc all keep our galaxies, planets, and bodies together despite the expansion right?
We can see galaxies move away because the distances are large enough and the interaction between galaxies is small enough.. but obviously our galaxy isn't being torn apart by this expansion at this time.
But is that effect measurable? If I was writing software to model the galaxy and the orbits of all the stars, would I have to take that expansion into account?
To use your analogy, we have our sheet and galaxies are represented by balls resting on the sheet. The balls can freely move about the sheet if influenced by something, but as the sheet grows the balls move apart if there's no other force in play right?
Will eventually that expansion become so great (if the rate of increase doesn't change anyway) that galaxies, solar systems, and eventually matter itself be torn apart?