The search for the universe’s center starts with a simple intuition: if everything exploded outward in the Big Bang, there ...

Between the end of cosmic inflation and the formation of the first atoms, the universe experienced a fleeting but pivotal era ...

This is the light echo of the Big Bang, the first light that freely moved through the universe. This relic is crucial to our ...

The universe is expanding. That much is clearer. But it’s less clear whether this expansion is accelerating or slowing down.

There's always a touch of melancholy when a chapter that has absorbed years of work comes to an end. In the case of the ...

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

Let's rewind the clock back…oh, I don't know, let's say a hundred years. It was 1917, and Einstein had just developed his ...

Evidence suggests the universe’s expansion has started to slow, not accelerate. The results imply dark energy is weakening ...

Scientists have many big questions to tackle about the universe, including how big it actually is. But even the proposed ...

The scientific study of cosmology, the field that focuses on the origins and evolution of the universe, is barely a century old. It has already been transformed more than once by new ideas, new ...

The "standard model" of cosmology, initially based on the Big Bang, the expansion of the universe, and the cosmic microwave background radiation, evolved into a more comprehensive "lambda-cold dark ...