LETTERS.

Gravity Waves Explained

I have been a NASA Goddard Space Flight Center astrophysicist for over 35 years, and I retired not long ago. I have been working in relativistic astrophysics since the early 60s and have published numerous articles in scientific journals on the application of general relativity to astrophysics. In 1963, I co-edited with William F. Hoffman (now professor of astronomy in the University of Arizona) a book Gravitation and Relativity, in which the theory and experimental detection of gravitational waves were among subjects discussed. Since then, of course, there have been many new developments in this subject.

The article, "Measuring …