But there are several important anomalies, including a widely debated one called the Hubble tension. It is named after Edwin ...

To explore this long-standing mystery, an international team of scientists formed a group known as the Collaboration for ...

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 ...

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

Most people think of space as a flat sheet: You travel in one direction, and you end up far from your starting point. But a new paper suggests that the universe may in fact be spherical: If you travel ...

No matter how elegant your theory is, experimental data will have the last word. Observations of the retrograde motion of the planets were fundamental to the Copernican revolution, in which the sun ...

If you were inside a spaceship traveling in a straight line out of our solar system, where would you end up? Would you keep getting farther from home, or would you slowly loop around and end up where ...

Eleonora Di Valentino does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...

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When you look at your surrounding environment, it might seem like you’re living on a flat plane. After all, this is why you can navigate a new city using a map: a flat piece of paper that represents ...