My sympathies to you, Rebecca, and to Harry. I am shocked and very saddened by this news of John's death.
John and I attended school together from 8th Grade through High School. I would read of his successes and occassionally see him on television science programs.
A decade ago we both attended one of our RPHS Class Reunions where I had the pleasure of meeting you and visiting with you both. I was glad to see he was happy and so successful in his chosen field.
John was always challenging our teachers and always asking questions. Astronomy has lost one of it's greatest.