Alex J. O’Connor, known online as CosmicSkeptic, is a YouTuber, writer, public speaker, and podcaster from England. He gained recognition for his videos that examine religion, atheism, and philosophy, building an audience of over 500,000 subscribers. O’Connor studied philosophy and theology at St John’s College, University of Oxford, where he graduated with a degree in 2021. His work extends beyond YouTube to public debates, conference talks, and writing that engages with questions of ethics, belief, and critical thinking. He is the host of the “Cosmic Skeptic Podcast,” which features conversations with philosophers, scientists, and public intellectuals. In recent years, he has expanded his focus to include applied ethics, particularly animal ethics and moral philosophy.