Improvision Posted July 25, 2009 Share Posted July 25, 2009 Note title. Link to comment Share on other sites More sharing options...
Klaynos Posted July 25, 2009 Share Posted July 25, 2009 The original expansion was due to energy left over from the big bang. Why the expansion is accelerating we don't know, there is some energy, labeled dark energy that is causing this but we don't know the origin of dark energy. Link to comment Share on other sites More sharing options...
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