Essays on UFOs and Related Conjectures invites readers to reflect on their beliefs and intuitions concerning extraterrestrial intelligence. The essays in this collection explore the extraterrestrial UFO hypothesis, optimized futures, and possible motives for a hypothetical extraterrestrial presence around Earth. Some of the essays also delve into the potential moral implications of such a presence. Overall, this collection makes a case for taking the extraterrestrial hypothesis seriously and for further exploring the evidence, theoretical considerations, and moral implications that may relate to this hypothesis.