The team’s orb rolled vertically at a rate of about 0.5 millimeters per second. Regardless, Mitra and colleagues wrote that their observation “challenges our basic understanding of physics,” with ...

What is a sphere? A sphere is a three-dimensional version of a circle, with all points on its surface being equidistant from the center. A sphere is also composed of a circumference, tangent, and ...

On Earth's surface, hot gas rises because gravity holds denser, colder gas closer to the planet's center. Indeed, the researchers found that hot, bright gas near the outer half of the sphere also ...