Main Engine Cut Off

Opinion and analysis of spaceflight, exploration, policy, and strategy, by @acolangelo. @[email protected]

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Yesterday I visited the Pentagon to sit down with General Saltzman, Chief of Space Operations—the head of the @USSpaceForce. We talk about the service 6 years in, acquisitions, the threats and space environment today, and what the future may hold for human spaceflight.

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A very fun time talking with @Kemp of @Astra tonight on @offnom! Talking Rocket 4, and Astra’s journey from startup to public to private again. Plus, some AI-in-space-company-ops talk. Have a watch/listen:

https://t.co/iqx9XeC4iX

https://t.co/M0rKcMB0GC

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🎙️ Today on the podcast: thoughts on yesterday’s Starliner news, the fixation on maintaining a presence in LEO, the stated demand signal there from @rookisaacman, and what to do between here and the Moon.

https://t.co/5pq8nioZhT

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Headlines! September 25, 2026:

https://t.co/IIC0JaTxAi

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Headlines! September 15, 2026:

https://t.co/LSJEqShowM

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@NASAAdmin @NFL @NASA Wrong side of the state. What’s up with that? Go Birds!

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@KenKirtland17 🫡

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🎙️ @AJ_FI joins me on the podcast to catch up on Zhuque-3, Long March 10B, Chang’e-7, and more!

https://t.co/ZtJAAWD5gD

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Headlines! August 26, 2026:

https://t.co/HvPZk7CkWb

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Lots of good sunspot action today for my 7% eclipse. Shitty, out-of-focus iPhone photo through my 8” Dobsonian for proof.

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Headlines! July 23, 2026:

https://t.co/JSQZzxjpHP

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@StephenClark1 go birds

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Headlines! July 13, 2026:

https://t.co/OKl3NojWTx

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Looking forward to talking with @SciGuySpace and @ChenrySpace in just about an hour! Thanks for having me, @arstechnica.

https://t.co/W6JSOwD8Wt

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Excited for this! Love these two, and we have _plenty_ to cover together.

[Eric Berger @SciGuySpace]

This will be frank and fun—talking the New Glenn catastrophe next week. It's been a month, so what happens next?

https://t.co/SH1o0pOpo3

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Headlines! June 12, 2026:

https://t.co/jKimNuNhaq

Anything going on?

[Matt Gjertsen @MattGjertsen]

I absolutely loved this sit down with Anthony on @WeHaveMECO. Fun discussion about what cultural lessons we can learn from organizations that are really thriving in today's landscape.

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Great conversation with @MattGjertsen on the podcast about what makes @SpaceX such an outlier in the industry, what aspects of leadership drive results there and elsewhere in the industry, and what others can implement within their own teams. Listen here:

https://t.co/fWOyfkLd91

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Headlines! June 4, 2026:

https://t.co/KvnC8Xwktx

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🎙️ You can guess the topics.

https://t.co/EmRw20c5hW

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Fuckin’ hell

[NSF - NASASpaceflight.com @NASASpaceflight]

Blue Origin's New Glenn just blew up at LC-36 while attempting to Static Fire ahead of NG-4.

https://t.co/tANS0dWyIH