Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New ...

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

The accelerating expansion of the Universe, first observed in 1998, remains one of the most profound mysteries in modern ...

Could time itself actually explain our universe's expansion? Our current cosmological model—known as lambda cold dark matter, ...

Explore 10 mind-blowing theories about what lies beyond the universe, from the multiverse and higher dimensions to the mysteries of dark energy and cosmic bubbles.

A team of astronomers sifted through James Webb Space Telescope data from multiple surveys to compile one of the largest ...

“He was very taken with the thought that no phenomenon becomes a true phenomena until it has been observed,” Wald told Salon ...

For decades, scientists have been looking for evidence of strings that connect everything in the universe. A new model offers ...