In their "mirror" hypothesis, the Universe would be accompanied by an anti-universe, evolving in the opposite direction in time, while respecting a symmetry called CPT, a principle that balances ...

Seconds after the Big Bang, the Universe exhibited an astonishing simplicity. Observations reveal a spatially flat, radiation ...

GENEVA (Reuters) - A huge particle detector to be mounted on the International Space Station next year could find evidence for the anti-universe often evoked in science fiction, physicists said.