For centuries, humanity has pondered the ultimate fate of the universe. From theories of infinite expansion to the concept of ...

We’ve grown up with the idea that the universe will expand forever, meaning the "cosmological constant" is positive. What if ...

We know how the universe began. An event we call the Big Bang started it all about 13.8 billion years ago. How the universe ...

Physicists predict the universe’s expansion will reverse, ending in a dramatic big crunch about 20 billion years from now.

What if the universe remembers? A bold new framework proposes that spacetime acts as a quantum memory. For over a hundred ...

Scientists are rethinking the universe’s deepest mysteries using numerical relativity, complex computer simulations of Einstein’s equations in extreme conditions. This method could help explore what ...

The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from dark-energy observatories ...

Chemistry in the first 50 million to 100 million years after the Big Bang may have been more active than we expected.

If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...