A ring or sphere could, apparently, be stable if surrounded by the right sizes and gravities of other stars.

By Brenden Bobby Reader Columnist In case you forgot, Pi Day is Friday, March 14 — a celebration of one of the most important numbers in our universe: 3.14159.  Pi is the ratio ...

A small sphere resting atop a large sphere begins to ... Jeff Smith is a former Math teacher and a retired US Navy Lieutenant Commander. Reach him at [email protected].