Main Engine Cut Off

Anthony Colangelo
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Dec 8, 2025 • 60min

T+317: Isaacman Renomination Hearing, Starliner Flights Cut, Starship at SLC-37, Zhuque-3 Almost Sticks the Landing, and More (with Stephen Clark)

Stephen Clark of Ars Technica joins me to talk about a ton of stories in the news—Jared Isaacman was back in front of Congress, a few Starliner flights have been cut from the ISS manifest, Starship received environmental approval to proceed at SLC-37, Zhuque-3 almost stuck its first landing attempt, the Soyuz launch pad fell apart at Baikonur, and the Space Force has a new mission naming scheme.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Matt, Fred, Kris, Natasha Tsakos, Josh from Impulse, Better Every Day Studios, Joakim, Joel, Ryan, The Astrogators at SEE, Tim Dodd (the Everyday Astronaut!), Heiko, Jan, Theo and Violet, Donald, Pat, Will and Lars from Agile, Lee, Russell, Joonas, Warren, Steve, Frank, Stealth Julian, David, and four anonymous—and hundreds of supporters.TopicsAuthor: Stephen Clark - Ars TechnicaNASA nominee appears before Congress, defends plans to revamp space agency - Ars TechnicaCongress warned that NASA’s current plan for Artemis “cannot work” - Ars TechnicaNASA seeks a “warm backup” option as key decision on lunar rover nears - Ars TechnicaIt’s official: Boeing’s next flight of Starliner will be allowed to carry cargo only - Ars TechnicaA spectacular explosion shows China is close to obtaining reusable rockets - Ars TechnicaBefore a Soyuz launch Thursday someone forgot to secure a 20-ton service platform - Ars TechnicaRivals object to SpaceX’s Starship plans in Florida—who’s interfering with whom? - Ars TechnicaSpaceX on X: “We’ve received approval to develop Space Launch Complex-37 for Starship operations at Cape Canaveral Space Force Station. Construction has started. With three launch pads in Florida, Starship will be ready to support America’s national security and Artemis goals as the world’s…”Attack, defend, pursue—the Space Force’s new naming scheme foretells new era - Ars TechnicaThe ShowLike the show? Support the show on Patreon or Substack!Email your thoughts, comments, and questions to anthony@mainenginecutoff.comFollow @WeHaveMECOFollow @meco@spacey.space on MastodonListen to MECO HeadlinesListen to Off-NominalJoin the Off-Nominal DiscordSubscribe on Apple Podcasts, Overcast, Pocket Casts, Spotify, Google Play, Stitcher, TuneIn or elsewhereSubscribe to the Main Engine Cut Off NewsletterArtwork photo by Blue OriginWork with me and my design and development agency: Pine Works
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Nov 26, 2025 • 30min

T+316: New Glenn’s Second Launch, First Landing, and Upgrade Roadmap

Blue Origin is fresh off an incredible few weeks—a successful second launch and first landing of New Glenn, followed by an exciting unveil of upgrades to the vehicle, including an enormous new version, New Glenn 9x4.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Lee, Natasha Tsakos, Fred, Will and Lars from Agile, Ryan, Stealth Julian, Pat, Heiko, Kris, Jan, Better Every Day Studios, Theo and Violet, Matt, Josh from Impulse, Russell, Joel, Warren, Joonas, Joakim, Tim Dodd (the Everyday Astronaut!), Donald, David, Frank, Steve, The Astrogators at SEE, and four anonymous—and hundreds of supporters.TopicsBlue Origin’s New Glenn rocket came back home after taking aim at Mars - Ars TechnicaJeff Bezos on X: “Good overview of the landing. We nominally target a few hundred feet away from Jacklyn to avoid a severe impact if engines fail to start or start slowly. We’ll incrementally reduce that conservatism over time. We are all excited and grateful for yesterday…”New Glenn Update | Blue OriginBooster 18 suffers anomaly during proof testing - NASASpaceFlight.comSenate Commerce Committee schedules hearing on Isaacman renomination - SpaceNewsLawmakers writing NASA’s budget want a cheaper upper stage for the SLS rocket - Ars TechnicaThe ShowLike the show? Support the show on Patreon or Substack!Email your thoughts, comments, and questions to anthony@mainenginecutoff.comFollow @WeHaveMECOFollow @meco@spacey.space on MastodonListen to MECO HeadlinesListen to Off-NominalJoin the Off-Nominal DiscordSubscribe on Apple Podcasts, Overcast, Pocket Casts, Spotify, Google Play, Stitcher, TuneIn or elsewhereSubscribe to the Main Engine Cut Off NewsletterArtwork photo by JAXAWork with me and my design and development agency: Pine Works
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Nov 11, 2025 • 1h 3min

T+315: Autonomy in Space (with Simone D’Amico, DJ Bush, and Al Tadros)

Simone D’Amico of Stanford and EraDrive, DJ Bush of NVIDIA, and Al Tadros of Redwire join me to talk about autonomy in space, to get into the specific details of what they’re working on and how it comes together, and what it may do for the industry in the next few years.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Joonas, Russell, Donald, Stealth Julian, Pat, Fred, David, Lee, Frank, Josh from Impulse, Steve, Joel, Joakim, Matt, Natasha Tsakos, Tim Dodd (the Everyday Astronaut!), Kris, Theo and Violet, Heiko, Will and Lars from Agile, Jan, Warren, The Astrogators at SEE, Ryan, Better Every Day Studios, and four anonymous—and hundreds of supporters.TopicsEpisode T+315: Autonomy in Space (with Simone D’Amico, DJ Bush, and Al Tadros) - YouTubeSimone D'Amico | LinkedInCenter for AEroSpace Autonomy Research (CAESAR)Stanford spinoff EraDrive claims $1 million NASA contract - SpaceNewsDJ Bush | LinkedInHow Starcloud Is Bringing Data Centers to Outer Space | NVIDIA BlogAl Tadros | LinkedInRedwire Space | Heritage + InnovationNASA Starling - Autonomous Tip and Cue in OrbitNASA Starling - Distributed Optical NavigationNASA Starling - Autonomous Space Domain AwarenessVISORS - Precise Formation-FlyingAutonomous Spacecraft 3D Model ReconstructionThe ShowLike the show? Support the show on Patreon or Substack!Email your thoughts, comments, and questions to anthony@mainenginecutoff.comFollow @WeHaveMECOFollow @meco@spacey.space on MastodonListen to MECO HeadlinesListen to Off-NominalJoin the Off-Nominal DiscordSubscribe on Apple Podcasts, Overcast, Pocket Casts, Spotify, Google Play, Stitcher, TuneIn or elsewhereSubscribe to the Main Engine Cut Off NewsletterArtwork photo by JAXAWork with me and my design and development agency: Pine Works
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Oct 31, 2025 • 35min

T+314: Jockeying for the Artemis 3 Lander, and the NASA Administrator Position

The chaos surrounding the NASA Administrator role takes center stage, affecting plans for the Artemis 3 lander. Tensions rise as SpaceX updates its Starship program amidst potential delays in Moon landings. Political maneuvering becomes evident as motivations and proposals for re-nominating candidates unfold. The podcast delves into how SpaceX might simplify mission architecture, while also exploring industry responses from competitors like Blue Origin and Lockheed. Ultimately, there’s a push for transparency to bolster confidence in the lunar ambitions.
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Oct 30, 2025 • 33min

T+313: Starlink, Kuiper, Project Bromo, and More (with Caleb Henry)

Caleb Henry, Director of Research at Quilty Space and a savvy space industry analyst, dives deep into the evolving world of satellite communications. He discusses Starlink V3’s innovative design with enhanced capabilities and inter-satellite links. Caleb also explores Project Kuiper’s strategic rollout in multiple countries and sheds light on the implications of the Airbus-Thales-Leonardo merger. Plus, he delves into the changing landscape for Iridium amidst competition from SpaceX, and previews upcoming research on relay satellites.
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Oct 17, 2025 • 44min

T+312: Starship Flight 11, Space Policy, and Priorities (with Miles O’Brien)

Miles O'Brien, a veteran science journalist and space analyst, dives into the latest from Starship Flight 11, highlighting its partial success and the challenges of lunar refueling. The discussion shifts to NASA's budget priorities amidst potential leadership changes, including Jared Isaacman's rumored interest in the NASA Administrator role. O'Brien raises alarms over workforce cuts at NASA and emphasizes the geopolitical stakes of lunar exploration, particularly if China makes strides at the South Pole. They also touch on the implications of SpaceX's evolving communication strategy and future ambitions.
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Oct 10, 2025 • 43min

T+311: Phil McAlister on Commercial LEO and NASA’s Human Spaceflight Budget

Phil McAlister, former Director of NASA’s Commercial Space Division, discusses the challenges facing NASA's human spaceflight budget and the future of commercial LEO destinations. He reveals how geopolitical events may have altered funding opportunities and explains NASA leadership's hesitance to retire the ISS. McAlister estimates that shifting to commercial stations could cut NASA's costs significantly. With budget pressures mounting, he warns that NASA might face serious operational challenges if funding issues persist.
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Sep 26, 2025 • 20min

T+310: NASA’s “Prove It” Era

NASA has shifted to a 'prove-it' era, demanding more from companies before awarding contracts. Blue Origin has been selected to potentially revive the VIPER rover mission, while the Dream Chaser faces setbacks that may end its ISS role. The new commercial space station strategy emphasizes demonstration over promises, reflecting a significant change in how NASA engages with private partners. This approach could increase costs and impose stricter bidding requirements, possibly sidelining newer vendors in the space industry.
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Sep 11, 2025 • 43min

T+309: EchoStar’s Spectrum Sale, Starlink’s Financials (with Caleb Henry, Director of Research at Quilty Space)

Caleb Henry, Director of Research at Quilty Space, joins me to talk about EchoStar’s spectrum sales and constellation cancellation, SpaceX’s spectrum purchase, and the financials of Starlink.This episode of Main Engine Cut Off is brought to you by 34 executive producers—Bob, Heiko, Creative Taxi, Josh from Impulse, Russell, Donald, Will and Lars from Agile, Matt, Steve, Lee, Joel, Tim Dodd (the Everyday Astronaut!), Frank, Natasha Tsakos (pronounced Tszakos), The Astrogators at SEE, Better Every Day Studios, Ryan, Kris, Pat, Joakim (Jo-Kim), Stealth Julian, Warren, Theo and Violet, Jan, Joonas, Fred, David, and four anonymous—and hundreds of supporters.TopicsQuilty Space (@QuiltySpace) / XStarlink Financial & Strategic Analysis 2025 1H | Quilty SpaceSign Up Form | Quilty SpaceEchoStar sells spectrum to SpaceX, cancels MDA satellite contract - SpaceNewsEchoStar’s $23 billion spectrum sale clears path for direct-to-device constellation - SpaceNewsEchoStar orders initial MDA satellites for $5 billion LEO constellation - SpaceNewsThe ShowLike the show? Support the show on Patreon or Substack!Email your thoughts, comments, and questions to anthony@mainenginecutoff.comFollow @WeHaveMECOFollow @meco@spacey.space on MastodonListen to MECO HeadlinesListen to Off-NominalJoin the Off-Nominal DiscordSubscribe on Apple Podcasts, Overcast, Pocket Casts, Spotify, Google Play, Stitcher, TuneIn or elsewhereSubscribe to the Main Engine Cut Off NewsletterArtwork photo by CMSEOWork with me and my design and development agency: Pine Works
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12 snips
Aug 27, 2025 • 36min

T+308: Chatting with Casey Handmer

Casey Handmer, founder of Terraform Industries and former JPL employee, shares captivating insights about NASA's struggles in 2025, including workforce challenges and budget cuts. He highlights the urgency for reform to compete with global space players like China. Casey also dives into innovative fuel synthesis technologies aimed at Mars exploration, emphasizing their potential to benefit both our planet and interplanetary missions. His unique perspective sheds light on the vital need for fresh approaches in space policy and talent management.

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