Researchers have observed strange goings-on around a supermassive black hole located nearly 300 million light years away.

By observing tiny ripples in spacetime called "gravitational waves" that propagate away from colliding black holes, ...

Peter Bentzon (ca. 1783–after 1850) was not only a free man; he was also a silversmith and jeweler who worked in Philadelphia and on the Caribbean island of St. Croix. Bentzon’s work is recognized ...