The Cosmic Skeptic Podcast

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Host Alex J O'Connor (from the YouTube channel 'CosmicSkeptic') discusses and debates deep and important issues with experts from a variety of philosophical, scientific and theological disciplines. Departing from Alex's snappier style on YouTube, this podcast presents more thorough analyses of the topics at hand, with help from a wide range of well-known professionals.

Alex J O'Connor


    • Jun 22, 2025 LATEST EPISODE
    • every other week NEW EPISODES
    • 1h 25m AVG DURATION
    • 109 EPISODES

    Ivy Insights

    The Cosmic Skeptic Podcast is an incredibly insightful and thought-provoking podcast hosted by Alex O'Connor, also known as Cosmic Skeptic. As a long-time follower of his YouTube channel, I was thrilled to discover that he had branched out into podcasting. The podcast showcases Alex's ability to articulate his thoughts in a patient and coherent way, leading to engaging conversations with fellow thinkers.

    One of the best aspects of this podcast is Alex's clarity in communication. He has a unique talent for breaking down complex philosophical and ethical concepts, making them accessible to a wide audience. His interviews with guests are always respectful and probing, allowing for deep exploration of topics. I particularly admire how he challenges his guests on the finer points of their arguments while maintaining a respectful dialogue.

    Another great aspect of the podcast is the range of topics covered. From philosophy and ethics to religion and politics, there is something for everyone interested in intellectual discourse. Alex's choice of guests is diverse and impressive, bringing together some of the finest minds in these fields. The discussions are always intriguing and provide new perspectives on pressing ethical questions.

    However, one downside of this podcast is that Alex no longer uploads episodes on YouTube. While it is understandable that he may want to focus on his podcast platform, as a fan who initially discovered him through YouTube, it would be great to see more content on that platform as well.

    In conclusion, The Cosmic Skeptic Podcast is a must-listen for anyone interested in open and rational conversations about philosophical and ethical topics. Alex's intelligence shines through in every episode, and his ability to engage with guests while challenging their ideas makes for compelling content. Whether you're a long-time follower or new to Cosmic Skeptic's work, this podcast will provide hours of stimulating discussion.



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    Latest episodes from The Cosmic Skeptic Podcast

    #109 David Pakman - The New Threat Donald Trump Poses to America

    Play Episode Listen Later Jun 22, 2025 69:21


    David Pakman is an American progressive political commentator and host of  @thedavidpakmanshow . Buy David's book, The Echo Machine here Learn more about your ad choices. Visit megaphone.fm/adchoices

    #108 Marcus du Sautoy - Do Numbers Exist?

    Play Episode Listen Later Jun 16, 2025 67:29


    Marcus du Sautoy is a British mathematician, Simonyi Professor for the Public Understanding of Science at the University of Oxford, Fellow of New College, Oxford and author of popular mathematics and popular science books. Buy Blueprints: How Mathematics Shapes Creativity here. Learn more about your ad choices. Visit megaphone.fm/adchoices

    #107 Dale Allison - Did Jesus Rise From the Dead?

    Play Episode Listen Later Jun 12, 2025 88:01


    Dale Allison is an American historian and Christian theologian. His areas of expertise include the historical Jesus, the Gospel of Matthew, Second Temple Jewish literature, and the history of the interpretation and reception of the Bible. Allison is the Richard J. Dearborn Professor of New Testament at Princeton Theological Seminary (2013- ). (Wikipedia) By Dale Allison's book, The Resurrection of Jesus, here. Learn more about your ad choices. Visit megaphone.fm/adchoices

    #106 Diarmaid MacCulloch - Sex and Christianity: a Tumultuous History

    Play Episode Listen Later May 29, 2025 59:03


    Diarmaid MacCulloch is an English academic and historian, specialising in ecclesiastical history and the history of Christianity. Since 1995, he has been a fellow of St Cross College, Oxford; he was formerly the senior tutor. Buy Lower than the Angels: A History of Sex and Christianity here. Learn more about your ad choices. Visit megaphone.fm/adchoices

    #105 John Lennox - Why Science Needs God

    Play Episode Listen Later May 22, 2025 104:10


    John Lennox is a Northern Irish mathematician, bioethicist, and Christian apologist originally from Northern Ireland. He has written many books on religion, ethics, the relationship between science and God, and has had public debates with atheists including Richard Dawkins and Christopher Hitchens. Learn more about your ad choices. Visit megaphone.fm/adchoices

    #104 Annaka Harris - Is Consciousness Fundamental?

    Play Episode Listen Later May 4, 2025 92:33


    Annaka Harris is an American writer. Her work touches on neuroscience, meditation, philosophy of mind and consciousness. She is the author of the New York Times bestseller Conscious: A Brief Guide to the Fundamental Mystery of the Mind. Get Annaka Harris' documentary Lights On here.

    #103 Rhett McLaughlin - Why I Left Christianity

    Play Episode Listen Later Apr 20, 2025 112:59


    Rhett McLaughlin is a comedian best known for creating the internet's most-watched daily talk show, Good Mythical Morning along side Link Neal; their award-winning weekly podcast The pair also host a weekly podcast, Ear Biscuits; and the instant #1 New York Times bestseller Rhett & Link's Book of Mythicality.

    #102 David Deutsch - You're Not Smarter Than a Caveman

    Play Episode Listen Later Apr 7, 2025 115:29


    David Deutsch is a British physicist at the University of Oxford, often described as the "father of quantum computing". He is a visiting professor in the Department of Atomic and Laser Physics at the Centre for Quantum Computation in the Clarendon Laboratory of the University of Oxford. (Wikipedia)

    #101 Brian Greene - String Theory, Fine Tuning, and Divine Design

    Play Episode Listen Later Apr 2, 2025 80:29


    Brian Greene is a professor of physics and mathematics at Columbia University, director of its centre for theoretical physics, and the chairman of the World Science Festival. He is best known for his work on string theory, especially in his book “The Elegant Universe”, which turns 25 this year.

    #100 Philosopher Shootout - 16 Thinkers, Ranked (With Joe Folley)

    Play Episode Listen Later Mar 23, 2025 188:47


    For episode 100 of Within Reason, I'm joined by Joe Folley, from the YouTube Channel "Unsolicited Advice", to tackle a completely arbitrary and ridiculous tournament of thinkers, each of whom are to some degree relevant to the show. Joe graduated from Cambridge University with an MPhil in Philosophy, specialising in logic, in 2023.

    #99 Penn Badgley - My Religious Conflicts With Playing a Killer

    Play Episode Listen Later Mar 17, 2025 116:27


    Penn Badgley is an actor best known for his roles in Netflix's You and the popular drama series Gossip Girl. He is less known as a podcaster and member of the Baháʼí Faith, a religion which teaches that there is a historical unity between major world religions and their prophets, having itself developed out of a branch of Twelver Shia Islam in the 19th century.

    #98 Jacob Hansen - A Mormon Explains Mormonism

    Play Episode Listen Later Mar 10, 2025 141:54


    Jacob Hansen is a Mormon YouTuber at the channel Thoughtful Faith.

    #97 Kipp Davis - What Are the Dead Sea Scrolls?

    Play Episode Listen Later Mar 2, 2025 135:07


    Kipp Davis (‪@DrKippDavis‬) is a post-doctoral fellow at the University of Agder in Kristiansand, Norway, where he specialises in the assignment and reconstruction of fragments from the Dead Sea Scrolls and their interpretation. (Google Books) The Dead Sea Scrolls are a set of ancient Jewish manuscripts from the Second Temple period. They were discovered over a period of 10 years, between 1946 and 1956, at the Qumran Caves near Ein Feshkha in the West Bank, on the northern shore of the Dead Sea. Dating from the 3rd century BCE to the 1st century CE, the Dead Sea Scrolls include the oldest surviving manuscripts of entire books later included in the biblical canons, including deuterocanonical manuscripts from late Second Temple Judaism and extrabiblical books. At the same time, they cast new light on the emergence of Christianity and of Rabbinic Judaism. (Wikipedia)

    #96 Music, Mormonism, and Peter Hitchens - 1.25m Subsrciber Q&A

    Play Episode Listen Later Mar 1, 2025 61:47


    A Q&A to celebrate hitting 1.25 million subscribers on YouTube.

    #95 James McGrath: John the Baptist, the Bible's Most Mysterious Man

    Play Episode Listen Later Jan 31, 2025 83:48


    James Frank McGrath is the Clarence L. Goodwin Chair in New Testament Language and Literature at Butler University. He is the author of two books on John the Baptist: "John of History, Baptist of Faith: The Quest for the Historical Baptiser", and "Christmaker: A Life of John the Baptist".

    #94 Dan McClellan - What Does the Bible Say About Abortion?

    Play Episode Listen Later Jan 27, 2025 79:57


    Dan McClellan is an American public scholar of the Bible and religion. His forthcoming book, "The Bible Says So", is available here.

    #93 The Etymology Nerd - How Social Media is Transforming Our Language

    Play Episode Listen Later Jan 21, 2025 69:40


    Adam Aleksic is a linguist known online as "The Etymology Nerd". His educational videos are watched regularly by millions. His forthcoming book "Algospeak" is currently available for preorder.

    #92 Bart Ehrman - The Dark Side of Christmas

    Play Episode Listen Later Dec 20, 2024 61:17


    Bart Ehrman is a New Testament scholar focusing on textual criticism of the New Testament, the historical Jesus, and the origins and development of early Christianity. Get Bart Ehrman's new course, The Dark Side of Christmas (affiliate link).

    #91 Filip Holm - What is Sufism? Islam and Mystical Experience

    Play Episode Listen Later Dec 13, 2024 84:03


    Filip Holm is the creator and host of "Lets Talk Religion", a YouTube channel which aims to educate on the subject of religion from an academic perspective. He joins the show to discuss Sufism, which can broadly be defined as the mystical tradition within Islam.

    #90 Rainn Wilson - Reclaiming Spirituality From Traditional Religion

    Play Episode Listen Later Dec 6, 2024 97:14


    Rainn Wilson is the actor and comedian best known for his role as Dwight Schrute on the The Office (US), for which he received three consecutive Emmy Award nominations for Outstanding Supporting Actor in a Comedy Series. He is also the host of ‪‪Soul Boom‬, a podcast discussing spirituality, and authored a book of the same name exploring how we can use spiritual tools to help solve some of life's problems.

    #89 The Cultural Tutor - The Philosophy and Ethics of Art

    Play Episode Listen Later Nov 28, 2024 61:43


    Sheehan Quirke is the Cultural Tutor, a writer with 1.7 million followers on X. His work on art, history, and architecture is some of the most widely-enjoyed in the world. He writes a newsletter called the Areopagus.

    #88 Ayaan Hirsi Ali - Why I Converted To Christianity

    Play Episode Listen Later Nov 22, 2024 62:38


    Ayaan Hirsi Ali is a Ayaan Hirsi Ali is a Somali-born Dutch-American writer, activist and former politician. Once an advocate for the new atheist movement, she last year announced her conversion to Christianity.

    #87 Cliffe and Stuart Knechtle - Biblical Slaves, Women, and the Unforgivable Sin

    Play Episode Listen Later Nov 13, 2024 166:18


    Cliffe and Stuart Knechtle run the extremely popular online Christian ministry ‪'Give Me an Answer'‬. In this episode they discuss troubling passages in the Old Testament, New Testament sexism, Job, doubting Thomas, the unforgivable sin (blaspheming the Holy Spirit), and more.

    #86 Pre-Election Podcast - Destiny on Immigration, Trump, and Voter ID

    Play Episode Listen Later Oct 31, 2024 98:08


    Steven Bonnell II, known online as Destiny, is an American live streamer and political commentator. He joins me to talk about Trump, Kamala, Biden, Elon Musk, Tucker Carlson, Mark Zuckerberg, Voter ID, immigration, demographic change, and who to vote for in the upcoming election.

    #85 Magnify - 7 Translation Problems in Genesis

    Play Episode Listen Later Oct 28, 2024 96:37


    Magnify is a YouTube channel of mostly short-form content, covering interesting details across history, linguistics, and religion.

    #84 David Nutt - The Truth About Drugs

    Play Episode Listen Later Sep 22, 2024 58:55


    David Nutt is an English neuropsychopharmacologist specialising in the research of drugs that affect the brain and conditions such as addiction, anxiety, and sleep. He was the UK Government's chief advisor on drug policy. He was fired in 2009 after criticising the Government's approach to drug harms.

    #82 Esoterica - The History of the Demiurge

    Play Episode Listen Later Sep 15, 2024 109:51


    Justin Sledge is currently a part-time professor of philosophy and religion at several institutions in the Metro-Detroit area and a popular local educator. His YouTube channel is "Esoterica".

    #81 Joe Folley - 9 Questions Atheists Cannot Answer

    Play Episode Listen Later Sep 9, 2024 150:00


    oe Folley runs the YouTube channel Unsolicited Advice. he graduated from Cambridge University with an MPhil in Philosophy, specialising in logic, in 2023.

    #81 Nick Bostrom - How To Prevent AI Catastrophe

    Play Episode Listen Later Sep 1, 2024 61:57


    Nick Bostrom is a philosopher known for his work on existential risk, the anthropic principle, human enhancement ethics, whole brain emulation, and superintelligence risks. His recent book, Deep Utopia, explores what might happen if we get AI development right.

    #80 The Moustache,The Bible, and The Kalam - 850k QnA

    Play Episode Listen Later Aug 25, 2024 52:30


    Thank you for 850,000 subscribers!

    #79 Elaine Pagels - The Origin of Satan

    Play Episode Listen Later Aug 11, 2024 68:42


    Elaine Pagels is an American historian of religion. She is the Harrington Spear Paine Professor of Religion at Princeton University. Pagels has conducted extensive research into early Christianity and Gnosticism. Buy "The Origin of Satan" by Elaine Pagels here.

    #78 Rory Sutherland - Why Logical Thinking is Illogical

    Play Episode Listen Later Jul 29, 2024 108:48


    Rory Sutherland is a British advertising executive, and vice chairman of the Ogilvy & Mather group of companies. His book, Alchemy, is available here.

    #77 Bart Ehrman - What is the Gospel of Judas?

    Play Episode Listen Later Jul 21, 2024 110:39


    Bart Ehrman is a New Testament scholar focusing on textual criticism of the New Testament, the historical Jesus, and the origins and development of early Christianity. He was one of the first people in the world to see the rediscovered manuscript of the Gospel of Judas, when he was asked by National Geographic to join a small team of experts who verified its authenticity. Study Bart Ehrman's courses and support the show at https://www.bartehrman.com/alex

    #76 Jonathan Pageau - Deconstructing the Fall of Adam and Eve

    Play Episode Listen Later Jul 16, 2024 119:02


    Jonathan Pageau is a French-Canadian icon carver, YouTuber and public speaker on symbolism, religion and the Orthodox faith.

    #75 Destiny on Jordan Peterson, Voting, and Political Principles

    Play Episode Listen Later Jul 7, 2024 146:05


    Steven Bonnell II is a popular American political streamer known online as Destiny.

    #74 Rabbi David Wolpe - What is Judaism?

    Play Episode Listen Later Jun 30, 2024 79:26


    David Wolpe is an American rabbi, and Visiting Scholar at Harvard Divinity School. He was named the most influential Rabbi in America by Newsweek in 2012.

    #73 Arguments for Atheism Tier List w/ Joe Schmid!

    Play Episode Listen Later Jun 23, 2024 155:56


    Joe Schmid is a PhD student in philosophy at Princeton University. He graduated with a B.A. in philosophy from Purdue University in 2022. He has published articles in metaphysics, philosophy of religion, and philosophy of time, and the author of books including "Existential Inertia and Classical Theistic Proofs". He runs the YouTube channel, "Majesty of Reason".

    #72 John Nelson - What Did Jesus Really Look Like?

    Play Episode Listen Later Jun 16, 2024 64:33


    John Nelson holds a PhD in Biblical Studies from the University of Edinburgh. His thesis is the first book-length study of Jesus' physical appearance in the Gospels. He runs a weekly Substack called "Behind the Gospels" which aims to make Biblical studies accessible to all.

    #71 Unsolicited Advice - An Introduction to Nihilism

    Play Episode Listen Later Jun 9, 2024 79:51


    Joe Folley is the creator of the YouTube channel "Unsolicited Advice" which creates short, digestible philosophical videos on a wide range of topics. He joins me today to discuss nihilism: its history, its meaning, and its significance in philosophy.

    #70 Philosophize This! - A Beginner's Guide to Philosophy

    Play Episode Listen Later Jun 2, 2024 79:13


    Steven West is the host of "Philosophize This!" one of the world's most popular philosophy podcasts. Listen to it here.

    #69 Iain McGilchrist - The Mind is More Than a Machine

    Play Episode Listen Later May 26, 2024 100:29


    Iain McGilchrist is a psychiatrist, writer, and former Oxford literary scholar. McGilchrist came to prominence after the publication of his book The Master and His Emissary, subtitled The Divided Brain and the Making of the Western World.

    #68 Andrew Mark Henry - What is The Gospel of Thomas?

    Play Episode Listen Later May 19, 2024 83:57


    Andrew Mark Henry is a scholar of religious studies. His research focus is early Christianity and late Roman religion. He earned his PhD at Boston University. His YouTube channel is "Religion for Breakfast".

    #67 Elaine Pagels | What Are The Gnostic Gospels?

    Play Episode Listen Later May 13, 2024 69:08


    Elaine Pagels is an American historian of religion. She is the Harrington Spear Paine Professor of Religion at Princeton University. Pagels has conducted extensive research into early Christianity and Gnosticism. See me speak at Level Up in Atlanta this June: http://levelupconferences.org/

    #66 Coleman Hughes - Should We Take Race Out of Politics?

    Play Episode Listen Later May 5, 2024 59:20


    Coleman Hughes is an American writer and podcast host. He is the author of "The End of Race Politics: Arguments for a Colorblind America".

    #65 Esoterica - The History of Yahweh

    Play Episode Listen Later Apr 28, 2024 104:31


    Justin Sledge is currently a part-time professor of philosophy and religion at several institutions in the Metro-Detroit area and a popular local educator. His YouTube channel is "Esoterica".

    #64 Rory Stewart - We Are Addicted to a Sense of Crisis

    Play Episode Listen Later Apr 21, 2024 69:20


    Rory Stewart is a former UK Government minister, MP, and deputy governor in Iraq following the western invasion. He walked on foot for two years across Afghanistan, Iran, Pakistan, India and Nepal in 2002. He was a private tutor to both Prince William and Prince Harry. He now co-hosts The Rest is Politics with Alastair Campbell, one of the UK's most popular shows.

    #63 A.C. Grayling - Who Will Own the Moon?

    Play Episode Listen Later Apr 14, 2024 62:44


    A.C. Grayling is a British philosopher and author. In 2011 he founded and became the first Master of New College of the Humanities, an independent undergraduate college in London. Buy "Who Owns the Moon?" here.

    #62 750,000 Subscriber QnA

    Play Episode Listen Later Apr 7, 2024 34:45


    Thank you all for 750,000 subscribers on YouTube!

    #61 Sam Harris - Can Science Determine Moral Values?

    Play Episode Listen Later Mar 31, 2024 175:57


    Sam Harris is a neuroscientist, philosopher, New York Times best-selling author, host of Making Sense, and creator of Waking Up.

    #60 Carlo Rovelli - Time is Weirder Than You Think

    Play Episode Listen Later Mar 24, 2024 63:59


    Carlo Rovelli, an Italian theoretical physicist, is known mainly for his contributions to research in the field of quantum gravity. He is the author of Seven Brief Lessons on Physics, The Order of Time, and White Holes, amongst other works.

    #59 William Lane Craig - Is Biblical Slaughter Ethical?

    Play Episode Listen Later Mar 17, 2024 66:01


    William Lane Craig is a Christian philosopher and public speaker, who today makes his third appearance on Within Reason. We discuss why Richard Dawkins refuses to debate him, and whether Old Testament slaughter can be justified.

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