Known as dinosaur stars for both their primeval nature and their immense size, Population III stars existed only when the ...

Positive curvature, like that on a sphere, implies a finite universe, while zero curvature, as on a flat plane or negative ...

Nash, L. (2026) On the Size of the Electron in a Quantum Universe. Journal of High Energy Physics, Gravitation and Cosmology, ...

This video explains how scientists estimate the size of the observable universe, what “radius” means in cosmology, and why ...

Astronomers have recently discovered that the Hercules–Corona Borealis Great Wall, a massive cosmic superstructure, might be much larger and closer to Earth than previously estimated. This remarkable ...

Is the universe infinite, Aristotle asked in 350 BCE, “or is this an impossibility? The decision … is … all-important to our search for the truth.” The Greek ...

A new effort to map the rumblings in spacetime caused by enormous black hole collisions paints a surprisingly loud and lopsided picture of the universe. When you purchase through links on our site, we ...

"It is larger than the size of most anything to which it might be compared." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The universe's ...

It’s always amazing, and more than a little humbling, when the universe reminds us that our “common sense” is provincial, falling apart on cosmic scales. If you’re on the surface of Earth—and I’m ...

Dark energy, a mysterious force that scientists believe is behind the accelerated expansion of the universe, is weakening — which could result in the universe over the course of billions of years ...