In this episode of The Interplanetary Podcast, I'm joined by ay new co-host, singer-songwriter Leddra Chapman, as we tackle one of the most mind-bending ideas in all of science: special relativity. From the speed of light and the nature of

May 31 · 1h 4m

–#328 - Ryan Dowdy - Artemis FoodFormer NASA food scientist Ryan Dowdy PhD joins Matt to explore how Artemis program is reshaping the future of human nutrition, from feeding astronauts on the ISS to the Moon and beyond to powering first responders here on Earth.Apr 30 · 1h 2m

–#327 - Radio Astronomy - Emma ChapmanAs Artemis II returns humans from around the Moon, Matt is joined by astrophysicist Emma Chapman who makes the case for exploring the universe without going anywhere by listening to the cosmos through radio waves.Apr 15 · 1h 26m

–#326 - Chasing Aliens - Daniel LavelleMatt is joined by journalist and Orwell Prize winner Daniel Lavelle, author of Chasing Aliens: Faith and Conspiracy in the UFO Heartlands. Travelling across America’s UFO hotspots, to explore the strange world of UFO culture. The conversatiMar 15 · 59 min

–#325 - Artemis II - Dhara PatelMatt is joined by Dhara Patel from the National Space Centre to explore Artemis II ; the first crewed mission around the Moon in over 50 years. They discuss Europe’s crucial role in the mission, the historic “firsts” represented by the ArteFeb 3 · 1h 3m

–#324 - Space 2025In this episode, Matt unpacks what it really means when billionaires start shaping national space policy sometimes more directly than governments themselves. We talk about Jared Isaacman’s new NASA leadership tone, the fight over NASA budgeDec 29, 2025 · 32 min

–#323 - Mark Craig - Apollo 1In episode 323, Matt sits down with filmmaker Mark Craig to talk about his new documentary Apollo 1 the film that revisits the story of Gus Grissom, Ed White, and Roger Chaffee, and the tragedy that reshaped NASA on the road to the Moon. MaDec 14, 2025 · 40 min

–#322 - Ethan Siegel - Grand Cosmic StoryIn this episode, Matt opens with forgotten space hero John Bevis’ birthday and a cosmic musing on relativistic dust, black holes, and the unimaginable energies hidden in tiny things. Then astrophysicist and author Ethan Siegel joins the shoNov 10, 2025 · 1h 29m

–#321 - Brian Clegg - The MultiverseIn this episode, Matt is joined by acclaimed science writer Brian Clegg to explore the dazzling world of the multiverse. Brian unpacks the science and speculation behind one of physics’ most mind-bending ideas. Together, they discuss why thOct 23, 2025 · 1h 8m

–#320 - Andy Saunders - Gemini and Mercury remasteredAndy Saunders joins Matt to talk about his new book Gemini and Mercury Remastered. We dig into the forgotten missions that paved the way for Apollo, the astonishing images he’s restored from NASA’s archives, and the human dramas behind themAug 25, 2025 · 1h 23m

–#319 Bubble UniverseMatt and Jamie dive headfirst into the cosmic foam to explore the Bubble Universe, the mind-bending idea that our universe might be just one of countless “bubbles” in a vast multiverse. From the physics of cosmic inflation and the mysteriesAug 10, 2025 · 55 min

–#318 - Dr. Saralyn Mark - Space HealthMatt welcomes Dr. Saralyn Mark, a world-renowned leader in women's health, space medicine, and innovation in gender-specific design. Dr. Mark is an endocrinologist, geriatrician, and former Senior Policy Advisor at the White House Office ofJul 5, 2025 · 1h 7m

–#317 - Roman Chiporukha - Space TourismMatt welcomes Roman Chiporukha, co-founder and CEO of SpaceVIP, the concierge service that books everything from zero-g airplane jaunts to orbital stays aboard the ISS. Episode 317 invites you to imagine your next vacation above the Kármán May 27, 2025 · 1h 2m

–#316 - Maritime Launch Services - Steve MatierEpisode 316 of the Interplanetary Podcast kicks off with Matt tackling the unsettling news of NASA’s potential science funding cuts—raising concerns about the future of groundbreaking space research—and pondering whether SpaceX’s mighty StaApr 15, 2025 · 1h 18m

–#315 - Civil Discourse - Alan SmaleAfter a rant about civil discourse and the need for truth in the space commnuity, Matt Chats with Alan Smale who writes alternate and twisted history, and hard SF. Hot Moon, his alternate-Apollo “technothriller with heart”, was launched bacMar 19, 2025 · 1h 22m

–#314 - Space Design Competition - Stephen ThrumMatt chats with Stephen Thrum, a teacher at Windaroo Valley State High School in Logan QLD (Australia), whose career spans from professional model making to interning at NASA. and is a Space Settlement Design Coach—a role in which he has leFeb 16, 2025 · 1h 17m

–#313 - 2024 roundup - Type 1 VenturesMatt chats with Tarek Waked, Founding Partner of Type One Ventures. Type One is an investment firm committed to developing a future civilization that is self-sufficient and interplanetary. The firm invests in space centric innovations. MattJan 8, 2025 · 1h 28m

–#312 - Space Radiation - Cosmic ShieldingMatt chats with Yanni Barghouty, CEO and co-founder of Cosmic Shielding Corporation (CSC). Yanni is creating radiation shielding technology to ensure that hardware can operate in space without degrading. www.linktr.ee/Interplanetary Hosts: Dec 9, 2024 · 1h 1m

–#311 - Space Noise - MSI-DFATMatt catches up with the crew from MSI-DFAT a company with over 60 years of combined engineering experience in spacecraft acoustic testing.Nov 9, 2024 · 1h 19m

–#310 - Ethan Siegel - Infinite CosmosMatt catches up with Ethan Siegel again to chat about the James Webb Space Telescope and his new book Infinite Cosmos on National Geographic.Oct 9, 2024 · 1h 5m

–#309 - The Enzmann ArchiveMatt is joined by Michelle Snyder and Jay Snyder to talk about their work with FREA the Foundation for Research of the Enzmann Archive. https://enzmannarchive.org/Sep 27, 2024 · 1h 37m

–#308 - Cailabs - Space LasersMatt is joined by Pu Jian of Cailabs to talk about Space Laser Communications.Aug 23, 2024 · 50 min

–#307 - Nova - Gerard Van BelleMatt is joined by the esteemed Dr. Gerard Van Belle of the Lowell Observatory to discuss the imminent nova of T Coronae Borealis. Dive into the fascinating details of this stellar event and what it means for our understanding of cosmic phenJul 11, 2024 · 1h 3m

–#306 - Dr. Eiman Jahangir - New ShepardMatt chats with Dr. Eiman Jahangir who was recently selected by Web 3 group MoonDAO as there 2nd astronaut to fly on a future Blue Origin New Shepard flight. A crazy story of trying and trying to then win a lottery. www.linktr.ee/InterplaneJun 17, 2024 · 51 min

–#305 - Adam Higginbotham - ChallengerMatt sits down with acclaimed author and journalist Adam Higginbotham to discuss his latest book, "Challenger: A True Story of Heroism and Disaster on the Edge of Space." This definitive account of the tragic space shuttle Challenger disastMay 23, 2024 · 1h 16m

–#304 - David Barnhart - ArkisysMatt speaks with The CEO and co-founder of Arkisys, David Barnhart. Arkisys is a company developing future space expansion by engineering 'The Port', a primary center for technology hosting, satellite integration, assembly, and resupply.Apr 30, 2024 · 49 min

–#303 - Dr Harry Cliff - Space OdditiesEpisode 303: Space Oddities with Dr. Harry Cliff - Anomalies and New Frontiers in Physics Matt delves into the mysteries of the cosmos with Dr. Harry Cliff, particle physicist, science communicator, and author of the new book, "Space OdditiMar 23, 2024 · 1h 12m

–#302 - Chris Lintott - Our Accidental UniverseMatt is Joined by Chris Lintott to talk about Our Accidental Universe his new book out this month and some of the ideas contained within. Chris Lintott is a Professor of Astrophysics at the University of Oxford, where his research ranges frMar 1, 2024 · 51 min

–#301 - Bernie Taylor - Biological TimeMatt is Joined by cultural astronomer and Paleolithic researcher Bernie Taylor In this unusual and captivating episode, join us on a remarkable journey as we delve into the intricacies of ancient timekeeping and its deep connection to the nJan 30, 2024 · 57 min

–#300 - Eric Berger -2023In this landmark 300th episode of the Interplanetary Podcast, Matt is thrilled to welcome renowned space journalist Eric Berger from Ars Technica. Join us for an enlightening journey through the major space exploration milestones of 2023, aDec 29, 2023 · 59 min

–#299 - Henrik Lampa - SustainabilitySustainable Horizons: SSC's Eco-Friendly Space Adventures Ever wondered about the environmental impact of shooting for the moon? This week's episode Matt is joined by Henrik Lampa, SSC's Head of Sustainability. Henrik's on a mission to turnNov 21, 2023 · 50 min

–#298 - The Planets - Andrew CohenIn this episode of the Interplanetary Podcast, we venture beyond the earthly realm with Andrew Cohen, one of the creative maestros behind the hit BBC series 'The Planets'. Our conversation orbits around the release of The Folio Society editOct 22, 2023 · 41 min

–#297 - Living On The MoonJoin hosts Jamie and Matt as they delve deep into the cosmos, exploring the latest advancements and discoveries in space exploration.Episode 297, where we delve into the mesmerizing world of Lunar exploration and colonization! In this episoSep 30, 2023 · 56 min

–#296 - Dark EnergyJoin Matt and Jamie on this enlightening episode of the 'Interplanetary Podcast' as they delve into one of the universe's most enigmatic phenomena: dark energy. What is this mysterious force that's driving the accelerated expansion of our uAug 22, 2023 · 53 min

–#295 - Dark MatterHosts: Jamie Franklin and Matt Russell Description: Join hosts Matt and Jamie as they dive into the enigmatic world of Dark Matter. This episode explores the history, theories, and ongoing research surrounding this elusive substance that maJul 15, 2023 · 42 min

–#294 - The Oort CloudJoin your hosts Matt and Jamie in this mini episode of the Interplanetary Podcast, as we voyage to the outer reaches of our solar system and beyond to uncover the enigmas of the Oort Cloud! This icy cloud of asteroids and comets, teetering May 20, 2023 · 30 min

–293 - The Possibility of Life - Jaime GreenIn this week's episode of the Interplanetary Podcast, host Matthew Russell sits down with Jaime Green, a renowned science writer, essayist, and series editor of The Best American Science and Nature Writing. Jaime discusses her latest book, May 8, 2023 · 48 min

–#292 - Blast Off Briefing - 2George joins Matt to chat about Space Exploration. www.linktr.ee/Interplanetary and become a Patron or even a producer of the show. Hosts: George and Matt Russell Music: Matt Russell / Iam7 Cover Image: Midjourney Additional Narration: PollApr 30, 2023 · 42 min

–#291 - JUICE - PART 2- Olivier WitasseMatt is joined by Olivier Witasse the @esa Jupiter Icy Moons Explorer (#JUICE) mission project scientist. www.linktr.ee/Interplanetary Hosts: Matt Russell Music: Matt Russell / Iam7 Cover Image: Mark McCaughrean Additional Narration: Brian Apr 6, 2023 · 47 min

–#290 - Jupiter Icy Moons ExplorerJamie Joins Matt once again to talk all about ESA's Jupiter Icy Moons Explorer (JUICE) www.linktr.ee/Interplanetary Hosts: Jamie Franklin and Matt Russell Music: Matt Russell / Iam7 Cover Image: Midjourney Additional Narration: George RusseApr 4, 2023 · 47 min

–#289 - Kevin Fong - 16 SunsetsDr Bob joins Matt on a quick and special episode to chat with Dr Kevin Fong about his latest project 16 Sunsets. www.linktr.ee/Interplanetary Hosts: Dr Bob Hodges and Matt Russell Music: Matt Russell / Iam7 Cover Image: Kevin Fong AdditionaApr 1, 2023 · 39 min

–#288 - A Journey To MarsJamie Joins Matt once again to talk all about Mars. www.linktr.ee/Interplanetary Hosts: Jamie Franklin and Matt Russell Music: Matt Russell / Iam7 Cover Image: Midjourney Additional Narration: George Russell Twitter @interplanetypodMar 7, 2023 · 55 min

–#287 - Venus : Exploring Earth's TwinJamie Joins Matt once again to talk all about Venus. www.Patreon.com/Interplanetary and become a Patron or even a producer of the show. www.linktr.ee/Interplanetary Hosts: Jamie Franklin and Matt Russell Music: Matt Russell / Iam7 Cover ImaFeb 12, 2023 · 39 min

–#286 - Blast off Briefing JanuaryGeorge joins Matt to chat about Space Exploration. www.Patreon.com/Interplanetary and become a Patron or even a producer of the show. www.linktr.ee/Interplanetary Hosts: George and Matt Russell Music: Matt Russell / Iam7 Cover Image: MidjouJan 22, 2023 · 36 min

–#285 - UAE - Space AgencyMatt flies solo this week to bring a timely interview with Ibrahim Al Qasim of the UAE Space Agency. If you enjoy the show please go over to www.linktr.ee/Interplanetary and become a member on Patreon. Host: Matt Russell Music: Matt RussellNov 30, 2022 · 36 min

–#284 - Very Large Telescopes with Dr James MileyLinn also Interviews fellow astronomer James Miley and tells Matt about her trip to ESO's Telescope facility in the Atacama Desert the largest optical-infrared observatory in the Southern Hemisphere.Nov 7, 2022 · 1h 23m

–#283 - Dr Becky - BlackHolesMatt is joined by Dr. Rebecca Smethurst a British astrophysicist, author, and YouTuber. Linn and Matt Chat about DART and Blackhoples and Birmingham. If you enjoy the show please go over to www.linktr.ee/Interplanetary and become a member oOct 2, 2022 · 1h 36m

–#282 - Martian House 2Linn is on holiday, so this week Rob joins Matt to talk about habitations on Mars. We Interview Nicki and Ella from the Building a Martian House Project based in Bristol. Matt also talks to Steel River Rocketeers about their Rocoon. If you Aug 28, 2022 · 1h 60m