The discussion centers on the fundamental nature of photons and their structure, particularly in the context of interstellar light deciphering. It is noted that photons are considered elementary structures, meaning they are not composed of smaller particles, although their exact nature remains unknown. Current understanding suggests that photons behave as quantum wavebunches that interact in complex ways. There is mention of potential future insights into photon structure, which could involve concepts like strings or vacuum states. Participants express interest in further research and resources, with one individual seeking contacts who are currently investigating photon structure. The conversation emphasizes the ongoing quest for knowledge in this area of physics.