Fiction

How sad. He died November 29, 2020, from COVID-19-related pneumonia and a stroke.

He had a writing career of 60 years, was the author of more than 120 works of science fact and fiction, six-time winner of the Hugo Award, an editor of Analog Science Fiction and Fact, an editorial director of Omni; he was also president of both the National Space Society and the Science Fiction Writers of America.