Mathematicians are challenging the idea that dark energy is responsible for the accelerating expansion of the universe. In a ...

Dark energy has been a mysterious element of cosmological equation since it was proposed three decades ago, but new research ...

To keep the universe static, Albert Einstein invented something called the cosmological constant. He later abandoned it.

But new studies suggest that one of his most famous ideas, the cosmological constant, may not be fixed after all. If true, it could mean the universe is destined to collapse rather than expand forever ...

Our best model of the cosmos has a glaring mathematical problem, but we may have found an answer.

The universe rarely fails to amaze. One of its latest surprises—nicknamed the “Einstein zig-zag”—reveals a stunning arrangement of galaxies and a distant quasar. Together, they produce a gravitational ...

What if wormholes were never cosmic tunnels at all? New research suggests Einstein and Rosen’s famous “bridge” may actually reveal something even stranger: time itself could flow in two directions at ...

If United States scientists fail to utilize this once in a blue moon opportunity to revolutionize science; then Europe will ...