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

We experience the flow of time because it’s a natural outcome of the basic laws of physics. But we may need to build a whole ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...

Astronomers used the James Webb Space Telescope and gravitational lensing to observe SN Eos, an ordinary supernova from the ...

An expanding universe complicates this picture just a little bit, because the universe absolutely refuses to be straightforward. Objects are still emitting light, and that light takes time to travel ...

The universe's expansion may actually have started to slow rather than accelerating at an ever-increasing rate as previously thought, a new study suggests. Subscribe to our newsletter for the latest ...