Main Engine Cut Off
Main Engine Cut Off is a podcast about spaceflight, exploration, policy, and strategy, hosted by Anthony Colangelo. Each episode offers opinion and analysis of the space industry, including launch programs, government agencies, and commercial space companies. The show digs into the business and political decisions shaping how humans get to orbit and beyond. It is aimed at listeners who follow aerospace news closely and want thoughtful commentary rather than headlines.
Episodes
T+340: Starliner’s Future and the Demand Signal
NASA and Boeing laid out Starliner’s return-to-flight plan as SpaceX prepares to leave Dragon behind. I talk through the weak demand signal for crewed flight in LEO, how NASA’s commitment to the ISS and commercial stations boxed themselves into this decision, and what to do between here and the Moon.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Theo and Violet, Mi
T+339: Starbase Louisiana, the Falcon Fade, and the Next Wave of Launch Vehicles
SpaceX officially announced Starbase Louisiana, and I break down why the site fits Starship’s launch, landing, and orbital architecture so perfectly. I also look at the transition from Falcon to Starship, and the new launch vehicles on the verge of debut.
This episode of Main Engine Cut Off is brought to you by 32 executive producers—Warren, Matt from Built, Theo and Violet, Tim Dodd (the Everyday
T+338: Zhuque-3, Long March 10B, Chang’e-7 (with Andrew Jones)
Andrew Jones returns to the show to catch up on the Chinese space industry—the landings of Zhuque-3 and Long March 10B first stages, Chang’e-7 and its delay, and more.
This episode of Main Engine Cut Off is brought to you by 32 executive producers—Steve, Joakim, Ryan, Tim Dodd (the Everyday Astronaut!), Joonas, Josh from Impulse, Fred, Will and Lars from Agile, Miles O’Brien, Natasha Tsakos, Lee,
T+337: Inversion Space (with Justin Fiaschetti, Co-Founder and CEO)
Justin Fiaschetti, Co-Founder and CEO of Inversion Space, joins me to talk about the company’s plan to store maneuverable reentry vehicles in orbit for rapid cargo delivery, the design and architecture decisions driving Arc including cross-range requirements and payload accomodations, and how they see the market for these services.
This episode of Main Engine Cut Off is brought to you by 32 execut
T+336: Rocket Lab Buys Iridium, New Glenn’s Pad Rebuild, and NASA Awards 4 CLPS Missions
Rocket Lab is buying Iridium for $8 billion, Blue Origin has a new plan to get New Glenn flying again without rebuilding the same pad architecture, and NASA just awarded four new CLPS missions.
This episode of Main Engine Cut Off is brought to you by 32 executive producers—Warren, Matt from Built, Theo and Violet, Tim Dodd (the Everyday Astronaut!), Natasha Tsakos, Lee, Donald, David, Matt, Joonas
T+335: Auriga Space (with Winnie Lai, Founder and CEO)
Founder and CEO of Auriga Space, Winnie Lai, joins me to talk about their electromagnetic launch infrastructure and the path she sees for Auriga across space and defense markets. And yes, we talk about whether this kind of alternative launch architecture is a good fit for Earth, or a better fit for pretty much every other rock in the solar system.
This episode of Main Engine Cut Off is brought to
T+334: SpaceX the Outlier, and Organization Leadership (with Matt Gjertsen)
I often talk about SpaceX being an extreme outlier in the industry and how many organizations have tried to replicate their approach, but very few (if any) have been successful. Matt Gjertsen of Built joins me to share a take on what exactly it is internally that drives their results, how to apply it in other organizations, and to share some perspective on his time at SpaceX leading Training and
T+333: New Glenn Explodes on LC-36, Starship Flight 12, and NASA Moon Base Updates
Blue Origin’s New Glenn blew up on LC-36 last night during a static fire test, Starship flew its 12th flight, and NASA had a series of updates on its Moon Base program, including LTV awards, launch and landing contracts, and a somewhat unexplained branding exercise.
This episode of Main Engine Cut Off is brought to you by 32 executive producers—Lee, Steve, Josh from Impulse, Kris, David, Miles O’B
T+332: Quantum Space (with Jim Bridenstine, CEO)
Former NASA Administrator Jim Bridenstine has joined Quantum Space as CEO. We talk about what the company is working on, the Ranger spacecraft, how they fit into the industry, where he sees their market going, and what it’s like to be a former NASA Administrator running a company in the industry.
This episode of Main Engine Cut Off is brought to you by 32 executive producers—Fred, Frank, Better Ev
T+331: Checking in on K2 (with Neel Kunjur, Co-Founder and CTO)
Neel Kunjur, Co-Founder and CTO of K2 Space, joins me to talk about their hardware in space today, how their vision and plans have evolved over the past few years, and how industry changes like the push for orbital data centers have impacted their future.
This episode of Main Engine Cut Off is brought to you by 32 executive producers—Lee, Steve, Josh from Impulse, Kris, David, Miles O’Brien, Tim D
T+330: 10 Years of MECO
The show turned 10 last Monday, so I thought it would be fun to have our good friend Jake Robins on to look back at where we were then, what’s happened since, and what that teaches us about the future.
This episode of Main Engine Cut Off is brought to you by 32 executive producers—Donald, Ryan, Joakim, Better Every Day Studios, Stealth Julian, David, Theo and Violet, Lee, Miles O’Brien, Will and L
T+329: Katalyst Space and the Mission to Boost Swift (with Ghonhee Lee, Founder and CEO)
Ghonhee Lee, CEO of Katalyst Space, joins me to talk about their upcoming mission to boost NASA’s Swift observatory, and how they are approaching in-orbit services differently than those that came before.
This episode of Main Engine Cut Off is brought to you by 32 executive producers—Donald, Ryan, Joakim, Better Every Day Studios, Stealth Julian, David, Theo and Violet, Lee, Miles O’Brien, Will an
T+328: Pam Melroy, Former NASA Deputy Administrator and Space Shuttle Commander
Pam Melroy, Former NASA Deputy Administrator, Space Shuttle Commander, and three-time Shuttle astronaut, joins me to talk about space policy past, present, and future. We talk about the most critical decisions and moments during her time as Deputy Administrator under Administrator Bill Nelson, and her thoughts on the Isaacman-era space policy from Ignition to Commercial LEO, and what to do about M
T+327: Artemis II, the Lunar Flyby Edition (with Paul Fjeld)
Artemis II completed their lunar flyby yesterday, and it was epic on all levels. Paul Fjeld and I discuss that and many other topics related to Artemis, Apollo, and human spaceflight.
This episode of Main Engine Cut Off is brought to you by 32 executive producers—Ryan, Tim Dodd (the Everyday Astronaut!), Will and Lars from Agile, David, Better Every Day Studios, Kris, Stealth Julian, Joonas, Russe
T+326: Artemis II Underway
Artemis II is underway with a spectacular first day.
This episode of Main Engine Cut Off is brought to you by 32 executive producers—Donald, Matt, David, Joel, Frank, Better Every Day Studios, Natasha Tsakos, Tim Dodd (the Everyday Astronaut!), Lee, Fred, Will and Lars from Agile, Ryan, Warren, The Astrogators at SEE, Pat, Joakim, Miles O’Brien, Steve, Jan, Stealth Julian, Kris, Theo and Violet, R
T+325: Ignition
There was a lot of news in NASA’s Ignition event last week, and I break down what actually matters: not whether Jared Isaacman’s timelines are realistic, but how this new roadmap strips away architectural dependencies and forces the real bottlenecks into the open. I talk through Gateway’s cancellation, the possible path away from SLS and ICPS, what this means for lunar landers and international pa
T+324: Impulse Space (with Tom Mueller, Founder and CEO)
Tom Mueller, Founder and CEO of Impulse Space, joins me to catch up on the company’s progress and plans—3 Mira missions flown, Helios soon to fly, $525M raised, new defense contracts, a lunar lander concept, and a new Colorado facility.
This episode of Main Engine Cut Off is brought to you by 33 executive producers—Joel, Tim Dodd (the Everyday Astronaut!), Warren, Steve, Ryan, Will and Lars from A
T+323: The Artemis Roadmap Shakeup
NASA Administrator Jared Isaacman announced a sweeping roadmap change to the Artemis program this morning—seemingly cancelling the EUS, Gateway, and all SLS upgrades, and instead pursuing the once-and-future annual launch cadence of SLS.
This episode of Main Engine Cut Off is brought to you by 33 executive producers—David, Russell, Pat, Better Every Day Studios, Joonas, Josh from Impulse, Theo and
T+322: SpaceX Acquires xAI as it Prepares for IPO, Blue Origin Cancels New Shepard, and Artemis II Delayed (with Loren Grush)
Loren Grush, of Bloomberg, joins me to talk about SpaceX’s acquisition of xAI, its preparation for a potential IPO, Blue Origin’s cancellation of New Shepard and their recent momentum, and the delay to Artemis II following its first wet dress rehearsal.This episode of Main Engine Cut Off is brought to you by 33 executive producers—David, Natasha Tsakos, Stealth Julian, Warren, Joakim, Tim Dodd (th
T+321: Artemis II, New Glenn’s First Reflight, Blue Origin’s TeraWave, and Tory Bruno’s Job Switch
Artemis II is on the pad, and I can’t stop thinking about it. So I guess listen to me think in the open? Also, a ton of Blue Origin news—the next flight of New Glenn will feature a flown booster, they’ve announced constellation plans under the name TeraWave, and Tory Bruno has left ULA to join the team at Blue.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Matt, Fr
T+320: NASA’s FY2026 Budget, the Isaacman Era, and the Eve of Artemis II (with Casey Dreier)
Casey Dreier of The Planetary Society joins me to talk about the NASA FY2026 budget, the early days of the Administrator Isaacman era, and how we feel going into Artemis II.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Matt, Fred, Will and Lars from Agile, Kris, Lee, Jan, Frank, Miles O’Brien, Josh from Impulse, Theo and Violet, Ryan, Joakim, Stealth Julian, Heiko
T+319: Headlines, December 22, 2025
A holiday special! Enjoy this week’s episode of Headlines free. It’s an absolute monster episode—way longer than usual Headlines episodes, I promise—but it’s a great example of what you get when you support the show over at mainenginecutoff.com/support.NASA finally—and we really do mean it this time—has a full-time leader - Ars TechnicaAgencywide Town Hall with NASA Administrator Jared Isaacman, F
T+318: General Chance Saltzman, Chief of Space Operations, United States Space Force
Yesterday, I had the chance to visit the Pentagon and sit down with General Chance Saltzman, Chief of Space Operations—the head of the United States Space Force. We talk about the service 6 years into its existence, the state of acquisitions, the threats and space environment today, and what the future may hold for the Space Force when it comes to human spaceflight.This episode of Main Engine Cut
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.Th
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
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, Fre
T+314: Jockeying for the Artemis 3 Lander, and the NASA Administrator Position
Thinking through the chaos that has ensued over the NASA Administrator role, the Artemis 3 lander acceleration movement, the SpaceX Starship HLS update, and a bit on how we actually got here.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Donald, Stealth Julian, Jan, Theo and Violet, The Astrogators at SEE, Joakim, Steve, Matt, Fred, Lee, Joel, Kris, Ryan, David, Jo
T+313: Starlink, Kuiper, Project Bromo, and More (with Caleb Henry)
Caleb Henry, Director of Research at Quilty Space, joins me (in studio!) to talk about Starlink V3, Starlink satellite relay, Kuiper’s rollout, the Airbus-Thales-Leonardo merger, and the future of Iridium.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Heiko, Joonas, Joel, The Astrogators at SEE, Russell, Joakim, Tim Dodd (the Everyday Astronaut!), Natasha Tsakos, D
T+312: Starship Flight 11, Space Policy, and Priorities (with Miles O’Brien)
Miles O’Brien, science correspondent for PBS News and CNN space analyst, joins me to talk about Starship Flight 11, the current space policy landscape including the ongoing government shutdown, the possible return of Jared Isaacman, and what to do about all the competing budget priorities at NASA.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Joakim, David, Heiko,
T+311: Phil McAlister on Commercial LEO and NASA’s Human Spaceflight Budget
Phil McAlister, former Director of NASA’s Commercial Space Division, joins me to talk about the Commercial LEO Destinations program, the budgetary issues facing NASA and its human spaceflight programs, and to share his perspective on the last (and next) few years in these areas.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Joel, Pat, Will and Lars from Agile, Joak
T+310: NASA’s “Prove It” Era
NASA selected Blue Origin to (maybe) deliver the once-cancelled VIPER rover, modified Sierra Space’s ISS resupply contract which likely puts the nail in the coffin of Dream Chaser, and released the draft of its new commercial space station strategy. All different stories with one message: prove it. But maybe not in a good way.This episode of Main Engine Cut Off is brought to you by 34 executive pr
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 Ev
T+308: Chatting with Casey Handmer
Casey Handmer, Founder of Terraform Industries, joins me to talk about the state of NASA in 2025, talent acquisition and retention, productivity, and so much more.This episode of Main Engine Cut Off is brought to you by 34 executive producers—Kris, Joakim (Jo-Kim), Creative Taxi, Heiko, Joel, Frank, Josh from Impulse, The Astrogators at SEE, David, Jan, Tim Dodd (the Everyday Astronaut!), Theo and
T+307: Executive Order on Regulatory Reform (with Tom Marotta)
Tom Marotta of The Spaceport Company joins me to talk about the executive order this week focused on commercial space regulatory reform, what problems it seeks to solve, his experience on both sides of those issues, and how we should understand the positioning of the order.This episode of Main Engine Cut Off is brought to you by 34 executive producers—Frank, David, Jan, Josh from Impulse, Steve, R
T+306: Lunar Outpost (with Michael Moreno, VP of Strategy)
Michael Moreno, VP of Strategy at Lunar Outpost, joins me to talk about what they’ve been up to at the company, the NASA Lunar Terrain Vehicle Services contract, the idea of services as a business on the Moon, and more.This episode of Main Engine Cut Off is brought to you by 35 executive producers—Lee, Russell, Fred, The Astrogators at SEE, David, Matt, Theo and Violet, Warren, Josh from Impulse,
T+305: The Starship 36 Explosion, and ESA Policy (with Adrian Beil, NASASpaceflight)
A special simulcast of this week’s Off-Nominal—the other show I do, if you somehow haven’t heard of it!—because it’s exactly the topic list with exactly the guest I had up next on my list. I’m joined by Adrian Beil of NASASpaceflight to talk about the recent mayhem at Starbase, and to kick around European space policy topics in the run up to the ESA Ministerial later this year.This episode of Main
T+304: The Musk/Trump Breakup, Jared Isaacman’s Withdrawn Nomination, and Starship Flight 9 (with Lori Garver)
Lori Garver, former NASA Deputy Administrator, joins me to talk about the chaos of the last week: the withdraw of Jared Isaacman’s nomination for NASA Administrator, Starship Flight 9, and of course, the wild public breakup of Elon Musk and President Trump.This episode of Main Engine Cut Off is brought to you by 33 executive producers—David, Donald, Matt, Frank, Better Every Day Studios, Warren, B
T+303: The Trump 2024 Transition (with Mark Albrecht)
Mark Albrecht joins me to talk about his time on the Trump 2024 Transition Team, the thinking behind some of the policy decisions we’re starting to see in the space and national security spheres, and more.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Joonas, The Astrogators at SEE, Will and Lars from Agile, Theo and Violet, Frank, Russell, Kris, Bob, Lee, Pat, Rya
T+302: A Tour of Marotta Controls
We take a tour of Marotta Controls in Montville, New Jersey, to see how they work, how they develop, produce, and test products at rate, and we learn about the most feared topic in space—valves!This episode of Main Engine Cut Off is brought to you by 33 executive producers—Joonas, Josh from Impulse, Heiko, Donald, Stealth Julian, Warren, Kris, Frank, Steve, Bob, Better Every Day Studios, The Astro
T+301: Hypersonics and Constellations (with Caleb Henry)
Caleb Henry, Director of Research at Quilty Space, joins me to talk megaconstellations, the hypersonics industry, and more.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Joonas, Josh from Impulse, Heiko, Donald, Stealth Julian, Warren, Kris, Frank, Steve, Bob, Better Every Day Studios, The Astrogators at SEE, Joakim (Jo-Kim), Fred, Matt, Pat from KC, Natasha Tsakos
T+300: Isaacman’s Confirmation Hearing, NASA and NOAA Budgets, NSSL Phase 3 Lane 2 Awards
Jared Isaacman was in Congress for a confirmation hearing for his nomination as NASA Administrator, which was followed up by reports of huge proposed budget cuts at NASA and NOAA. And as expected, SpaceX, ULA, and Blue Origin all received awards for NSSL Phase 3 Lane 2.This episode of Main Engine Cut Off is brought to you by 33 executive producers—nt, Frank, Joonas, Will and Lars from Agile, Pat f
T+299: Starliner, According to Butch and Suni (with Eric Berger)
Eric Berger of Ars Technica joins me to talk about his recent interviews with Butch and Suni in the aftermath of their flight, the update NASA put out about Starliner, and how it all lands from where we are now.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Ryan, David, Theo and Violet, Fred, Steve, Warren, The Astrogators at SEE, Matt, Pat, Tim Dodd (the Everyday
T+298: Eric Schmidt Takes Over at Relativity, Rocket Lab Plans Mynaric Acquisition
Eric Schmidt has taken a majority stake in Relativity and will serve as its CEO, so this is a good time to check in on their plans. Rocket Lab is planning to acquire Mynaric, and I have a theory I felt like I needed to float.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Matt, Donald, Frank, David, Lee, Will and Lars from Agile, Kris, Pat from KC, Joel, Bob, The As
T+297: Firefly Blue Ghost 1, Intuitive Machines IM-2, SpaceX Starship Flight 8 (with Josh Dinner)
Josh Dinner of Space.com joins me to talk about a wild week in space—Firefly’s Blue Ghost 1, Intuitive Machines’ IM-2, SpaceX’s Starship Flight 8, Rocket Lab announcements, and more.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Stealth Julian, Kris, Heiko, Pat, Jan, Warren, Josh from Impulse, Ryan, Lee, Joel, David, Tim Dodd (the Everyday Astronaut!), Matt, Pat fr
T+296: Jim Bridenstine on Space Policy
Former Congressman and NASA Administrator Jim Bridenstine joins me to talk space policy, then and now: CLPS, Commercial Space Stations, Artemis, international partnerships, and more.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Stealth Julian, Kris, Heiko, Pat, Jan, Warren, Josh from Impulse, Ryan, Lee, Joel, David, Tim Dodd (the Everyday Astronaut!), Matt, Pat fr
T+295: The Economics of Space (with Matthew Weinzierl and Brendan Rosseau)
Matthew Weinzierl and Brendan Rosseau join me to talk about their new book, Space to Grow: Unlocking the Final Economic Frontier. We talk about the economics driving the space industry today, how traditional economic theories apply—or not!—to the industry, and how to use economics as a lens to shape your business and policy approach to the future.This episode of Main Engine Cut Off is brought to y
T+294: Elon Musk and the Trump Administration, Potential SLS Cancellation (with Eric Berger)
Eric Berger of Ars Technica joins me to talk about Elon Musk and the whirlwind start of the second Trump administration, and what the future may hold for SLS.This episode of Main Engine Cut Off is brought to you by 31 executive producers—Will and Lars from Agile, Fred, The Astrogators at SEE, Ryan, Stealth Julian, Warren, Joakim (Jo-Kim), Tim Dodd (the Everyday Astronaut!), David, Frank, Lee, Joon
T+293: Jonathan’s Space Report Library Transition (with Jonathan McDowell)
Jonathan McDowell—astrophysicist at Harvard-Smithsonian Center for Astrophysics and the namesake of the McDowell Line at 80 kilometers—joins me to talk about his fundraiser to move his epic space library to a new, permanent home. Let’s help him out!This episode of Main Engine Cut Off is brought to you by 32 executive producers—Frank, Lee, Joel, Theo and Violet, Harrison, Josh from Impulse, Matt, W
T+292: New Glenn Flight 1, Starship Flight 7
Blue Origin flew New Glenn successfully for the first time, and SpaceX flew Starship for the seventh time. Both featured failures at different points of the flight, with the impacts on Starship being significantly bigger than those on New Glenn.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Frank, Lee, Joel, Theo and Violet, Harrison, Josh from Impulse, Matt, Warre
T+291: Axiom Updates Station Plans, Firefly Wins Another CLPS Mission
Axiom Space announced changes to their station build out plan, bringing free-flying capability forward in their timeline and switching to a berthing port at the ISS to avoid the US Deorbit Vehicle. Firefly won another CLPS task order, this time for a lander with a rover, and for quite a bit more money than the last few.This episode of Main Engine Cut Off is brought to you by 32 executive producers
T+290: Jared Isaacman Nominated NASA Administrator
Jared Isaacman, the man with a private space program, has been nominated NASA Administrator, to run the nation’s space program.This episode of Main Engine Cut Off is brought to you by 32 executive producers—Frank, Lee, Joel, Theo and Violet, Harrison, Josh from Impulse, Matt, Warren, Will and Lars from Agile, Donald, Russell, Kris, Fred, Better Every Day Studios, Pat from KC, Joakim, Steve, Tim Do
T+289: Starship Flight 6, ABL’s Pivot, NS-26 (Headlines Preview)
A special preview of MECO Headlines, covering Starship Flight 6, ABL’s pivot to missile defense, and much more. Subscribe today to get Headlines regularly!This episode of Main Engine Cut Off is brought to you by 31 executive producers—Jan, Matt, Fred, Harrison, The Astrogators at SEE, Pat from KC, Will and Lars from Agile, Warren, Steve, Joel, Pat, Better Every Day Studios, Donald, Lee, David, Kri
T+288: The Return of President Trump
Donald Trump has been reelected President of the United States, and the main character of spaceflight, Elon Musk, is one of his top advisors. Some thoughts on where things may go from here, and a bit of my wishlist.This episode of Main Engine Cut Off is brought to you by 31 executive producers—Lee, Russell, The Astrogators at SEE, Theo and Violet, David, Fred, Donald, Stealth Julian, Josh from Imp
T+287: Polaris Dawn (with Jared Isaacman)
Jared Isaacman of the Polaris Program joins me to talk about the Polaris Dawn mission, his EVA experience, the Hubble Space Telescope situation, how the Polaris Program and SpaceX approach tech development and flight planning, and the Philadelphia Eagles.This episode of Main Engine Cut Off is brought to you by 31 executive producers—Jan, Matt, Fred, Harrison, The Astrogators at SEE, Pat from KC, W
T+286: Starship Flight 5
SpaceX is entering a new era for Starship after the epic Flight 5, with its pinpoint ship reentry and staggeringly beautiful booster catch.This episode of Main Engine Cut Off is brought to you by 31 executive producers—Matt, Will and Lars from Agile, Steve, Harrison, Warren, Frank, Russell, Josh from Impulse, Tim Dodd (the Everyday Astronaut!), Stealth Julian, Fred, Lee, David, Theo and Violet, Jo
T+285: The Public Dispute Between SpaceX and the FAA
SpaceX and the FAA have been going a few rounds back and forth in public over fines and delays. It’s weird and inscrutable but maybe helpful in the long run in a few ways.This episode of Main Engine Cut Off is brought to you by 31 executive producers—Donald, Pat from KC, Joel, Jan, Lee, Better Every Day Studios, Fred, Theo and Violet, Russell, Pat, Warren, Joonas, David, Stealth Julian, Bob, Harri
T+284: Stoke Space (with Andy Lapsa, CEO)
Andy Lapsa, Co-Founder and CEO of Stoke Space, joins me to talk about the company, their vision for the future, their approach to launch, the larger trends that are shaping the market, and how that all might come together in the next few years.This episode of Main Engine Cut Off is brought to you by 31 executive producers—Steve, Fred, Joonas, Better Every Day Studios, Stealth Julian, Kris, Theo an
T+283: Starliner, Fram2, VIPER, Blue Moon (with Jeff Foust)
Jeff Foust of Space News joins me to talk about Starliner, Fram2, VIPER, Blue Moon, and everything else going on in space.This episode of Main Engine Cut Off is brought to you by 31 executive producers—Jan, Warren, Pat from KC, David, Frank, Lee, Joonas, Josh from Impulse, Steve, Harrison, Russell, Joel, Bob, The Astrogators at SEE, Stealth Julian, Tim Dodd (the Everyday Astronaut!), Kris, Fred, T
T+282: Space Policy and Presidential Transitions (with Mark Albrecht)
Mark Albrecht joins me to talk about the state and future of space policy in a very dynamic Presidential election year. He shares some stories from the past, talks about his experience in presidential transitions and on the National Space Council, and ruminates on what we may see in November and beyond.This episode of Main Engine Cut Off is brought to you by 31 executive producers—Stealth Julian,
T+281: Star Catcher (with Andrew Rush, President & CEO)
Andrew Rush returns to the show to talk about his new venture, Star Catcher. They are working to build an energy grid in space, beaming energy directly to existing solar panels on satellites in LEO.This episode of Main Engine Cut Off is brought to you by 31 executive producers—Steve, Kris, Theo and Violet, Warren, Ryan, Josh from Impulse, Better Every Day Studios, Lee, Jan, Harrison, Fred, Matt, D
T+280: VIPER Cancelled, Falcon 9 Grounded
NASA announced their intent to cancel VIPER, the rover that was due to go to the Moon on Astrobotic’s Griffin lander, after severe schedule and cost growth. SpaceX had a rare failure of Falcon 9 that has led to a (seemingly short) grounding of the vehicle.This episode of Main Engine Cut Off is brought to you by 31 executive producers—Frank, Donald, Fred, Bob, Steve, Matt, Will and Lars from Agile,
T+279: Phantom and VLEO (with JP Ramos, Business Development Manager at Redwire)
A few weeks ago, we talked about Redwire’s SabreSat spacecraft, and today we’re talking about their Europe-based Phantom spacecraft. We talk about the spacecraft platform itself, how the different parts of Redwire work together, VLEO and its use cases, and how to fly satellites through little bits of atmosphere.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Joel, T
T+278: Firefly Alpha’s New Launch Sites, ISS News Blitz (Deorbit Vehicle, Collins Spacesuits, and Starliner)
Firefly added launch sites in Virginia and Sweden for its Alpha vehicle. NASA has selected SpaceX to build the ISS US Deorbit Vehicle, closed out their task orders to Collins for ISS spacesuits, and decided to keep Starliner at the ISS for a few more weeks.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Joel, The Astrogators at SEE, Warren, Russell, Joonas, Stealth
T+277: SabreSat, VLEO, and DARPA’s Otter Program (with Spence Wise, SVP of Missions and Platforms at Redwire)
Redwire announced today that it has been awarded a contract from DARPA to serve as the prime mission integrator for its Otter program. For the program, and for the industry beyond that, they’ll be developing SabreSat, an air-breathing spacecraft flying in VLEO. Spence Wise, Senior Vice President of Missions and Platforms at Redwire, joins me to discuss the program, VLEO generally, and to dive into
T+276: Mars Sample Return Studies, NSSL Phase 3 Lane 1 Selections
NASA selected the organizations who will be carrying out mission design studies for the Mars Sample Return rethink, and the US Space Force selected the first 3 bidders for the National Security Space Launch Program Phase 3 Lane 1.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Lee, Kris, Joel, Ryan, Russell, Steve, Theo and Violet, Better Every Day Studios, Joonas,
T+275: Starliner’s First Crew, Starship’s Fourth Flight
Starliner flew its first crew, Starship flew its fourth flight, Chang’e-6 collected its first samples, and Agnikul Cosmos flew its first mission.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Warren, Bob, Stealth Julian, Will and Lars from Agile Space, Harrison, Jan, Josh from Impulse Space, Russell, Lee, Donald, Ryan, Tim Dodd (the Everyday Astronaut!), Pat from K
T+274: The Vulcan and Artemis Roadmaps
United Launch Alliance’s Vulcan debut went smoothly, but sluggish hardware integration raises doubts about meeting commitments, while Orion faces heat shield issues, potentially shaking up the Artemis manifest.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Lee Ryan, SmallSpark Space Systems, Benjamin, Pat, Lee, Fred, Warren, Josh from Impulse Space, Bob, Jan, Kris,
T+273: Mars Sample Return
NASA is heading back to the drawing board for a Mars Sample Return architecture, and is accepting proposals for mission studies by May. I talk about a few takeaways from the communication of that plan, and ponder whether or not SpaceX is going to do the damn thing.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Lee, Benjamin, Ryan, Stealth Julian, Russell, Warren, W
T+272: Moon Rovers, Space Stations, and Starships
NASA selected 3 teams to work on unpressurized rovers for Artemis, while Japan signed on officially to provide a pressurized rover in exchange for seats on Artemis landers. Elsewhere, Mitsubishi took a stake in Starlab, and I still needed to catch up on Starship’s 3rd flight and the ensuing update from SpaceX.This episode of Main Engine Cut Off is brought to you by 33 executive producers—Kris, Bet
T+271: Checking in on the Chinese Space Industry (with Andrew Jones)
Andrew Jones returns to the show to catch up on the Chinese space industry—Tiangong, reusable launchers, constellations, and the Moon.This episode of Main Engine Cut Off is brought to you by 35 executive producers—Tyler, Jan, Will and Lars from Agile Space, Benjamin, Warren, Pat, Russell, Craig from SpaceHappyHour.com, Theo and Violet, SmallSpark Space Systems, Steve, Fred, Stealth Julian, Better
T+270: K2 Space (with Neel Kunjur, Co-Founder and CTO)
Neel Kunjur, Co-Founder and CTO of K2 Space, joins me to talk about their vision for the future of satellites and the wider space industry, what they’ve been up to lately, and what their roadmap to the launch pad looks like from here.This episode of Main Engine Cut Off is brought to you by 35 executive producers—David, Pat from KC, Joonas, Josh from Impulse Space, Will and Lars from Agile Space, T
T+269: IM-1 and Beyond (with Tim Crain, Co-Founder and CTO of Intuitive Machines)
Tim Crain, Co-Founder and CTO of Intuitive Machines, joins me to talk about their recent IM-1 mission to land Odysseus on the Moon as part of NASA’s CLPS program.This episode of Main Engine Cut Off is brought to you by 36 executive producers—Russell, Chris, Josh from Impulse Space, Will and Lars from Agile Space, Warren, Ryan, Matt, Harrison, Lee Hopkins, Bob, Brandon, Stealth Julian, Frank, Tim D
T+268: IM-1, CLPS, NASA Budget (with Eric Berger)
Eric Berger of Ars Technica joins me to talk about Intuitive Machine’s successful landing despite so many issues on the mission, the future of CLPS, and the tough questions facing NASA and its budget.This episode of Main Engine Cut Off is brought to you by 36 executive producers—Tyler, Lee Hopkins, Better Every Day Studios, Joel, Jan, Will and Lars from Agile Space, Matt, Russell, Craig from Space
T+267: Vulcan, New Glenn, Peregrine, Artemis
I catch up with a round up of stories from January: ULA’s first Vulcan launch, Blue Origin’s success with its BE-4 engines and what it means for their year, Astrobotic’s Peregrine mission, JAXA’s SLIM mission, and NASA’s announcement of Artemis delays.This episode of Main Engine Cut Off is brought to you by 36 executive producers—Tyler, Lee Hopkins, Better Every Day Studios, Joel, Jan, Will and La
T+266: Alex Fielding, CEO and Chairman, Privateer
Alex Fielding, CEO and Chairman of Privateer, joins me to talk about what they’re working on and what drives them as an organization.This episode of Main Engine Cut Off is brought to you by 36 executive producers—Joel, The Astrogators at SEE, Chris, Joonas, Tyler, Bob, Craig from SpaceHappyHour.com, Theo and Violet, SmallSpark Space Systems, Matt, Harrison, Benjamin, Kris, Stealth Julian, Donald,
T+265: Headlines, featuring Starship IFT-2, Dragonfly, and Ariane 6
A special (free!) airing of this week’s episode of MECO Headlines. Starship IFT-2, Dragonfly, Ariane 6, ISS happenings, launches, and more.This episode of Main Engine Cut Off is brought to you by 35 executive producers—Donald, Pat from KC, David, Theo and Violet, Dawn Aerospace, Steve, SmallSpark Space Systems, Jan, Chris, Bob, Tyler, Stealth Julian, Kris, Russell, Pat, Fred, Craig from SpaceHappy
T+264: ESA’s Interest in Space Stations, Virgin Galactic Bails on VSS Unity
ESA is looking to start a commercial cargo program while looking further ahead to commercial space stations by signing an agreement with Airbus and Voyager. Virgin Galactic is laying off 20% of its staff and ending VSS Unity flights in just a few months.This episode of Main Engine Cut Off is brought to you by 35 executive producers—Russell, Joonas, Kris, SmallSpark Space Systems, Tim Dodd, the Eve
T+263: Space Policy Roundup (with Marcia Smith)
Marcia Smith of SpacePolicyOnline.com joins me for a roundup of space policy topics—the House Speaker mayhem, the outlook for budgets over the next year, what to do about the ISS and its related expenses, and a lot more.This episode of Main Engine Cut Off is brought to you by 35 executive producers—Frank, Kris, Tyler, Fred, Lee, Pat from KC, Dawn Aerospace, Stealth Julian, Craig from SpaceHappyHou
T+262: Printing a Meniscus in the BioFabrication Facility (with Dr. Molly Mulligan and Dr. Ken Savin of Redwire)
Dr. Molly Mulligan and Dr. Ken Savin of Redwire join me to talk about successfully 3D bioprinting the first human knee meniscus on the International Space Station in their BioFabrication Facility, how this work fits into the near and far future of both health and the space market at large, and to discuss a wide-ranging set of related topics.This episode of Main Engine Cut Off is brought to you by
T+261: Agile Space (with CEO Chris Pearson and Chief Engineer Lars Osborne)
Chris Pearson (CEO) and Lars Osborne (Chief Engineer) of Agile Space join me to talk about what they’re working on, how the company has gotten to where it is today, and what’s in store for the future.This episode of Main Engine Cut Off is brought to you by 35 executive producers—Pat from KC, Chris, Benjamin, Pat, Jan, Joonas, The Astrogators at SEE, Tyler, Dawn Aerospace, Bob, Fred, Joel, Donald,
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