Posted on May 9, 2023May 9, 2023 by Jeffrey Clark Dr. Ronald Held Ronald Held has a Ph. D in astrophysics from Rensselaer Polytechnic Institute. As a fan since TOS, Star Tek has inspired his research and presentation topics. Return to Our Guests Page Return to Our Guests Page Post navigationPrevious post: Ed SpeleersNext post: 802 Ghostbusters