The shortest distance between two points is a straight line. This is one of the basic principles of Euclidean geometry. But we live on a spherical Earth, so we cannot travel the straight line path ...

Geometry may be one of the oldest branches of mathematics, but it’s much more than a theoretical subject. It’s part of our everyday lives, says Professor Jennifer Taback, and key to understanding many ...

The alternative text for this image may have been generated using AI. Our results highlight the fascinating range of defect structures and defect arrangements that result from the interplay between ...

A: The short answer is gravity. This ‘force’, by virtue of the large masses of planets and stars, forces them into a spherical shape. Part of the answer is also geometry: a sphere is the most compact ...