Board Thread:The Flash episode discussions/@comment-9346948-20150520010255/@comment-5123750-20150521100538

Qoushik wrote: I think Eddie dying was a bad decision, he just did what he thought was right. In that loop, Nora would live too!

A millennium of events can't be fixed, but it can't continue either. So nature's system overloads and decided to rip off everything. And that's when the black hole was created.

P.S. Just my speculation! First of all You People need to under stand that Entertainment Physics, Chemistry and Biology is VERY VERY different from REAL world Physics, Chemistry and Biology. Thus the Laws of Physics, Chemistry and Biology in the ARROWVERSE is different from the Laws of Physics, Chemistry and Biology in THE Universe.