The shape of the universe is not something we often think about.

When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration of a black hole accretion disk glowing with radiation. New research suggests that ...

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

The universe may be vast, but researchers have multiple points of evidence that reveal its shape.

The universe follows strict rules, until observations suggest something doesn’t quite add up. Galaxy rotation, expansion ...

For measuring curvature of 3D (hyper) surface we need solid angles instead of plane angles. General relativity (GR), which explains events on the greatest cosmological scale, and quantum mechanics (QM ...

Dark matter and gas in the universe. There may be more dark matter than we think. Credit: Illustris, CC BY-SA No matter how elegant your theory is, experimental data will have the last word.