Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of ...

The universe began with a bang—an explosion so intense, it forged the fabric of space and time itself. This pivotal moment, known as the Big Bang, marked the birth of everything we see, know, and are.

A decades-old idea is quietly regaining attention in theoretical physics: ancient structures embedded in the universe’s ...

The universe’s first moments after the Big Bang were strange beyond imagination. Now physicists have discovered they may have been even weirder than we thought, dominated by enormous, twisted knots of ...

If the existence of cosmic strings is confirmed, it would be huge. They could help uncover the Holy Grail of physics: a theory of everything. And in the far future, they might even enable us to time ...

The most energetic particles in the universe – ultrahigh-energy cosmic rays – likely come from supermassive black holes in the hearts of nearby active galaxies, says a study by scientists from nearly ...