A physicist has mounted one of the most detailed technical challenges yet against the idea that our universe is a computer simulation, arguing that the energy required to run such a program would ...

The IceCube Neutrino Observatory, buried deep in Antarctic ice, has spent two decades chasing the faintest signals from the most violent corners of the universe. Its latest results, drawn from 13 ...

It's well established that the universe is expanding, but there's serious disagreement among scientists over how fast it's ...