T+64: BE-4 Fires Up, and Some Thoughts on the Future of Commercial and Military Launch

Blue Origin fired up their BE-4 engine for the first time, which is a big moment. And I share some meandering thoughts on the future of commercial and military launch.

This episode of Main Engine Cut Off is brought to you by 22 executive producers—Kris, Mike, Pat, Matt, Jorge, Brad, Ryan, Jamison, Guinevere, Nadim, Peter, Donald, Lee, Jasper, Chris, Warren, Robert, and five anonymous—and 95 other supporters on Patreon.

Blue Origin on Twitter: “First hotfire of our BE-4 engine is a success #GradatimFerociter”
Blue Origin just sent a jolt through the aerospace industry | Ars Technica
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