Quote:
Originally Posted by T@T
I'm not saying saying anything really..just looking for answers.
Your saying a bunch without saying really anything, are you a scientist in it for the money?(like most)
No offense but if your willing to open your trap at least explain your position...otherwise it's just drivel without answers.
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Of course things move around inside an inflating universe. After all, it's not the galaxies and other celestial bodies expanding, it's the intervening stretches of intergalactic space where the force of expansion is powerful enough due to the lack of adequate gravitational force that is stretching. At small distances, other forces dominate (as photon said). It's why our atoms aren't ripped apart -- the electromagnetic force is far stronger. It's why the moon doesn't race away from us, and the Sun doesn't disappear as space expands at faster-than-light-speed (which doesn't defy special relativity, since nothing is travelling
through space relative to other objects at superluminal speeds).
The Andromeda galaxy is a great example. It's rushing toward the Milky Way, and will collide and likely merge with our galaxy in the distant future. This doesn't contradict anything, however, as at those distances gravity is still dominant, and you don't need to worry about the effects of dark energy.
And if you think about it, as the universe continues to expand and the distances between celestial objects grows, the rate of expansion should grow, as well, as the force of gravity becomes weaker, and weaker. This, of course, relies on whether or not dark energy is constant, but it could explain the accelerated expansion of space they've noticed has begun around 7 million years ATB. Another explanation could be quintessence -- that the inflationary period hasn't ended yet, and we're still experiencing it.
As for how the CMBR is linked to the age of the universe,
here is a link to a Wikipedia article that helps explain the Lambda Cold Dark Metter Model, which is what cosmologists generally use when trying to date the universe using the bang. Trying to explain all the ways the CMBR is linked to the age of the universe in here would enlarge this post by a lot, and, frankly, I couldn't explain all the mathematics. Basically, as you may or may not know, it's the residual heat left over from the start of the bang that was trapped for a while due to scattering by free electrons before the matter era (neutrally charged atoms were formed). It then escaped, but has had its energy reduced due to the expansion of space and the red-shift effect (its wavelength has been stretched out, making it less energetic and cooler). Scientists measure the peaks and troughs of the temperature of the CMBR throughout time, using advanced mathematics, and are able to come to conclusions that support other pieces of knowledge and evidence.
It's not foolproof, and it's not 100% fact, but it all works together remarkably well. The age of the universe used to fluctuate often in scientific circles two decades ago, but since the 2000s there has been a lot of consensus on the issue, and it's why you haven't seen the age being changed every other year or so like you used to.