Recent discoveries have reignited excitement and curiosity in the scientific community, suggesting the possible existence of ...

A backward, mirror universe could explain the existence of dark matter. If an anti-universe exists, it would run backward in ...

In one new theory, it is possible that dark matter exists in a mirror universe where there are only dark versions of forces ...

The idea of aliens hiding in a parallel universe — though seemingly absurd — is presented as a way to bridge the gap between theoretical physics and the search for extraterrestrial life.

Parallel universes crop up in two places in physical theories. One is in our conception of inflation, the theory of the extremely early universe.

In some models, alternate realities bubble out from cosmic inflation or form across vast string theory landscapes. Many-worlds, by contrast, keeps its universe clones close—unseen, yet superimposed.

Studies of the , the afterglow of the Big Bang, have revealed that our universe is experiencing accelerated expansion. For this observation to fit with the main theory of cosmic evolution ...

The research team, led by David Deutsch at Oxford U, demonstrated that the universe branches out into parallel versions of itself in order to address various probabilistic quantum outcomes. (The ...