A radical new theory regarding the origin of the universe suggests that gravitational waves, tiny ripples in spacetime first ...

One possibility to explain the constants of nature is that there’s more than one universe. That we live in a multiverse, with ...

Deep in the first moments of the Big Bang, the entire cosmos shook and rumbled. Those quakes still reverberate to the present day. It will take the most sensitive instruments ever imagined to reveal ...

Here’s what you’ll learn when you read this story: A backward, mirror universe could explain the existence of dark matter. If an anti-universe exists, it would run backward in time, before the Big ...