Using advanced mathematical tools inspired by physics, the team has derived a general equation for any number of tangent circles.

For a long time, the Kakeya conjecture, which involves rotating an infinitely narrow needle, kept mathematicians ...

NASA spotted a circle of clouds over the Pacific Ocean, and the image is still breathtaking over 10 years later.

A 2014 satellite image captured a rare glimpse of a massive, eerily circular ring of clouds that formed slap-bang in the ...

A mysterious black ring spotted hovering in the skies above Seattle, Washington caused mass commotion throughout the city.