Dark energy » Findings show the force has been a constant part of the universe. 
By Sheena McFarland
 |  The Salt Lake Tribune
The expansion of the universe has been speeding up for the past 5 billion years, but that hasn’t always been the case.
 Shortly after the Big Bang—the event 
scientists believe occurred 13.8 billion years ago that created the 
universe and everything in it—the universe was expanding at a much 
slower rate.
"If we think of the universe as a roller 
coaster, then today we are rushing downhill, gaining speed as we go," 
Nicolas Busca of the Laboratoire Astroparticule et Cosmologie of the 
French Centre National de la Recherche Scientifique (CNRS), one of the 
lead authors of the study, said in a statement. "Our new measurement 
tells us about the time when the universe was climbing the hill—still 
being slowed by gravity." 
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| Source: The Salt Lake Tribune. | |
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