In 1980, Stephen Hawking gave his first lecture as Lucasian Professor at the University of Cambridge. The lecture was called "Is the end in sight for theoretical physics?" Forty-five years later, ...

String theory is the idea that the fundamental particles we observe are not point-like dots, but rather tiny strings. String theory is one of the most famous ideas in modern physics, but it is also ...

Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host Ask a Spaceman and Space Radio, and author of "Your Place in the Universe." Sutter contributed this article to ...