Might the universe we can observe be just half the tale, with a mirror universe moving in reverse through time filling out the narrative? A new and intriguing idea from scientists at the Perimeter ...

A new theory promises to simplify our approach to the universe's earliest moments, but some cosmologists say further mathematical scrutiny is warranted. Reading time 5 minutes Following the Big Bang, ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American A brouhaha has erupted over the theory of ...