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 ...

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

The solar system is moving through space over three times as fast as estimated, calling into question our best model of the ...

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

What is the actual speed and direction of our solar system as it moves through the cosmos, and how does this compare to ...

The mysterious force called Dark Energy, which helps the Universe to expand, might be changing in a way that challenges our ...

Precise measurements from multiple radio telescopes strongly suggest that our solar system is moving far too fast for our ...

In a controversial new paper, researchers argue that the acceleration of the universe's expansion has slowed down.

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 ...

"We really needed the sensitivity of JWST. We also needed the 100 times magnification from gravitational lensing from a ...