If the universe is expanding, then what is it expanding into, and what is it expanding from? Where's the edge of the universe ...

The question of whether the universe has an edge touches one of the deepest mysteries in cosmology. It’s the kind of question that makes your brain hurt in the best way possible, challenging ...

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 ...

Astronomers have long thought the universe should look generally the same in every direction, but an anomaly in the radiation from the big bang persists even after a new analysis from radio telescopes ...

Physicists may soon witness a cosmic fireworks show: the explosive death of a primordial black hole. Once thought to be unimaginably rare, new research suggests there’s up to a 90% chance of catching ...