The “dark energy” field that has fueled the expansion has been weakening over the past 4 billion to 5 billion years, new data ...

Scientists are homing in on the nature of a mysterious force called dark energy, and nothing short of the fate of the universe hangs in the balance ...

A project to map galaxies across the universe may have spied cracks in the foundation of our understanding of the cosmos.

We are the Universe trying to understand itself. How, and why, did we come to be? Why does the Universe take the shape it ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.

For example, the surface of a giant doughnut is another 2D space. When you look around the universe you live in, it looks like a 3D space, just like the surface of the Earth looks like a 2D space.

New insights from the Atacama Cosmology Telescope offer unprecedented images of the universe at 380,000 years old, revealing ...