Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of what the universe looked like in the moments before it rapidly changed ...

The farther away an object in space lies, the longer it takes its ... But the universe is a time machine. Looking at more distant objects, we learn about more ancient times and phenomena.

Artist Ashley Zelinskie's new VR work is called "Twin Quasar." Two roads diverge between a pair of quasars, and I'm sorry I can't travel both — actually, wait, I can travel both.

The line between fiction and reality blurs as cosmic strings hint at the possibility of time travel, challenging humanity’s understanding of space and time. Once dismissed, the cosmic string ...