A controversial new theory claims the Big Bang never happened, challenging one of the most fundamental beliefs in modern ...

In the search to understand how the universe came to be, a new theory is rewriting the script. Instead of one massive, fiery ...

A bold new theory suggests the universe didn’t begin with a single Big Bang, but instead unfolds through a series of ...

These series of step-like bursts happen so rapidly that they are difficult to observe as these singularities wink in and out ...

Intriguingly, ultralight dark matter might be able to turn into photons (light) — and it's through this process that the ...

Physicist Richard Lieu first explored the idea that gravity could exist without mass—now he’s got a new cosmological model ...

In simplest terms, the rate at which the universe expands on paper doesn’t match actual astronomical observations. That speed ...

Cosmologist Katie Mack breaks down what the latest findings about dark energy mean for our universe’s future. Either way, it won’t be happy.