Saru Posted November 22, 2012 #1 Share Posted November 22, 2012 The expansion of the universe may be speeding up now but it appears that this wasn't always the case. New measurements have captured the universe’s expansion when it was slowing down 11 billion years ago, before a mysterious entity called dark energy took over and began spurring the cosmos to expand faster and faster. Read more... 1 Link to comment Share on other sites More sharing options...
ROGER Posted November 24, 2012 #2 Share Posted November 24, 2012 You know , thinking on this grand a scale makes my little , water filling brain HURT. 1 Link to comment Share on other sites More sharing options...
Tutankhaten-pasheri Posted November 26, 2012 #3 Share Posted November 26, 2012 I am not convinced that we know enough even to say that universe is expanding. We have have had hi-tech instruments for only a very short period of time, and what we observe, even over a period of a century, is a very very brief snapshot of what happens, or more correctly, happened. Yes, red shifts, blue shifts, manual shifts , auto etc etc. But if universe began with a singularity, then it would expand away from this point, maybe not in a progressive manner, perhaps with bulges in the expansion in this or that direction, but there would still be a general point of origin. Where is this? in what part of the sky do we look for direction of the center of the universe? If we detect light from ten billion years ago coming from direction X, is direction X from where everything has travelled? And then some other astronomers detect light ten billion years old coming from direction Y, which is, for sake of argument, 180 degrees from direction X. Then what? Link to comment Share on other sites More sharing options...
FlyingAngel Posted December 4, 2012 #4 Share Posted December 4, 2012 Slow down until all expansion, then become a Big Implosion. Like your heart is pumping with blood. Link to comment Share on other sites More sharing options...
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