Einstein’s waves detected in star smash

Vicky Kalogera, a gravitational-wave astrophysicist at Northwestern University who contributed to the historic detections of gravitational waves, speaks at the National Press Club in Washington, Monday, Oct. 16, 2017, during an announcement on one of the most violent events in the cosmos that was witnessed completely for the first time in August and tells scientists where gold and other heavy elements come from. [Photo: AP/Susan Walsh]