The sky is dominated by two seemingly perfect circles: the Sun and Moon. When safely behind the right amount of partially obscuring fog or low clouds, the Sun’s shape is obvious. Its equator’s tiny ...

Let's face it: drawing circles is hard. Our minds are programmed to love the symmetry of the shape, but our hands just can't make it perfect. We're so inadequate at drawing circles, scientists have ...

Our world is filled with shapes and symbols that form familiar elements. One of those common geometric symbols is the circle. The circle plays a pivotal role in everyday life as tires on the cars we ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. The Earth is nearly a perfect circle, and when the Sun strikes it, it ...