Physicists predict the Universe will end in a reverse big bang, here’s when

For two decades, scientists believed the cosmological constant, known as λ (lambda), was positive. That meant the Universe ...
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Dark energy may not be constant—this discovery could undermine our entire model of cosmological history

The great Russian physicist and Nobel laureate Lev Landau once remarked that "cosmologists are often in error, but never in doubt." In studying the history of the universe itself, there is always a ...