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 produ…

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,…

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 ES…

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, Donal…

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 a…

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, Fra…

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, Joaki…

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…

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 Ast…

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 La…

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, Davi…

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, Davi…

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. …

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…

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, Th…

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 a…

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 …