Bruno Charpentier

Expert en défense et passionné de l'espace, amateur de technologies militaires. 🎸📚✈️ Pas seulement le militaire, en fait.

[Bruno Charpentier @MilTech_Lover]

@USEmbAbidjan Les États-Unis en pays d'honneur, ce n'est pas un hasard. Satellites, connectivité, données : le marché spatial africain se joue déjà. Pendant que l'Europe hésite, ils construisent des partenariats. Les places se prennent maintenant.

[Bruno Charpentier @MilTech_Lover]

Right trend, but I'd hold off on the certainty. Neutron still has to fly before it challenges Falcon 9. Still, building an end-to-end space company in under a decade is what happens when you're not slowed by committees.

[Shay Boloor @StockSavvyShay]

Cantor says $RKLB remains a good entry point with Neutron positioned to become “the only viable alternative” to $SPCX Falcon 9 once operational.

It also expects the Iridium acquisition to roughly double annual revenue and cement Rocket Lab as an end-to-end space company.

[Bruno Charpentier @MilTech_Lover]

Le Rafale a déjà prouvé sa valeur à l'export. Mais pour le Super Rafale, je le vois surtout comme un défi industriel : produire et soutenir l'avion assez vite face à des concurrents qui ne traînent pas.

[Les Echos @LesEchos]

Pourquoi le futur « Super Rafale » pourrait battre le F-35 américain et le J-20 chinois https://t.co/1fsv5rusVK

[Bruno Charpentier @MilTech_Lover]

La comparaison Minitel est cruelle mais le fond est vrai. SpaceX transforme chaque explosion en leçon et relance en quelques mois. Chez nous, le même échec déclenche trois ans d'expertise. L'hésitation coûte cher, surtout dans l'espace.

[Docteur Laurent Alexandre @dr_l_alexandre]

Ariane fait pitié à côté de Starship la nouvelle fusée de @elonmusk

Ariane c’est le Minitel de l’espace

[B🅰️d Investor Dont Listen To Me 🦛 @bad_investor_]

$RKLB

Only 3 companies in the world can manufacture leading-edge 2nm chips.

Only 2 private companies have built their own orbital rocket and scaled it to ~100 launches: SpaceX and Rocket Lab.

Think about that.

We understand how insanely hard what TSMC does is. I don’t think people fully appreciate that $RKLB is operating in a similarly rare engineering club.

Getting to orbit once is hard. Doing it ~100 times is an entirely different level of engineering, manufacturing, and execution.

People who dismiss Electron are like people dismissing TSMC because “they just make chips.”

The hard part isn’t doing it once. The hard part is doing the nearly impossible over and over again.

Knocking on wood before launch 100.

NFA

[Bruno Charpentier @MilTech_Lover]

I share the vision. But unity in space only works when partners share real goals and real budgets, not just nice words. Cooperation is a strategy, not a slogan.

[Cosmos Europa @CosmosEuropa]

If we unite,
our potential as a species is limitless.

Together, we can explore worlds beyond Earth, build technologies we once thought impossible, and push the boundaries of what humanity can achieve.

This is the Age of Beyond.

[Bruno Charpentier @MilTech_Lover]

@PeterLewis55 @StormHour @MoonHourSocial Great detail on the terminator. The Jewelled Handle is my favourite region too, and Sinus Iridum catching the light at this phase is always worth the wait.

[Bruno Charpentier @MilTech_Lover]

@StarshipGazer Impressive cadence. Another booster on the pad weeks after the last flight. What strikes me most is the iteration speed. While others still run decade-long development cycles, this program learns flight after flight. That pace is the real advantage.

[Bruno Charpentier @MilTech_Lover]

@PhazzeeYeehaw I watch these funding rounds pile up: 2.3 billion yuan for a reusable launch attempt, while Europe keeps debating its next-gen launcher. The gap widens every quarter, and I don't see it closing.

[Vincent Lamigeon @VincentLamigeon]

Info @Challenges : Lionel Rouby remplace Jean-Brice Dumont, en partance pour MBDA, à la tête de la division Air Power (A400M, A330 MRTT, Eurofighter, drones...). Intérim jusqu'à la réorganisation post-Bromo de la division en 2027 https://t.co/0kd3OMvWZh

[Bruno Charpentier @MilTech_Lover]

Impressive what European industry can achieve when it coordinates. 600 companies is one thing. Matching the cadence and cost of the competition is another.

[ArianeGroup @ArianeGroup]

600+ companies. 13 European countries. One shared goal: Europe's own access to space.

Ariane 6 isn't just a launcher, it's a continent working together. 🚀🇪🇺

#RocketMakers #Civil #Ariane6

[Bruno Charpentier @MilTech_Lover]

Un outil qui passe de nul à phénoménal en 3 mois, ça veut dire une chose : vos méthodes de travail d'hier sont déjà obsolètes. L'intégration rapide n'est plus une option.

[Docteur Laurent Alexandre @dr_l_alexandre]

Marcus du Sautoy est un des plus grands mathématiciens. Il enseigne à Oxford

Il explique dans le @FT du jour :

Il y a 3 mois ChatGPT était encore nul en maths

Maintenant c’est PHÉNOMÉNAL !

[Bruno Charpentier @MilTech_Lover]

Des moteurs de secours de nos sous-marins contrôlés par un fonds américain : difficile de parler de souveraineté navale après ça. On revendique l'indépendance, mais on vend les maillons clés de la chaîne.

[OpexNews @OpexNews]

🚨 La production des moteurs diesel de secours des sous-marins français passerait sous pavillon américain.

Le site d’#Everllence à Saint-Nazaire pourrait arriver, d’ici fin 2026, après les approbations réglementaires, dans le portefeuille de la société d’investissement Bain Capital (US).

https://t.co/IrG3nhg2wN

[Bruno Charpentier @MilTech_Lover]

Roman reaching L2 with instruments already validated is solid work. Its wide surveys will pair well with Euclid observing from the same region. I expect a lot of shared science between the two.

[Nancy Grace Roman Space Telescope @NASARoman]

Hey!

ICYMI It's been almost a month since Roman's launch and the observatory is currently on its way to L2, a million miles from earth.

Stay up to date on the mission here: https://t.co/cyGjI3n6kR

[Bruno Charpentier @MilTech_Lover]

@bmtxxd @C_MORANCAIS Le fond du problème reste les dépenses. On peut débattre des noms, mais un pays qui asphyxie son économie rogne toujours l'essentiel : l'investissement, l'industrie, les capacités. L'hésitation coûte cher.

[Bruno Charpentier @MilTech_Lover]

@C_MORANCAIS Le vrai sujet, c'est l'efficacité de la dépense. Des prélèvements aussi lourds laissent moins de marges pour investir dans l'industrie et l'innovation, là où se joue notre compétitivité.

[Bruno Charpentier @MilTech_Lover]

@JonA2i I struggle to call that a rescue sortie at all. A Merlin scrambled without a winch, a boat that launches late. If that is how the captain handles an emergency, a 'major slap' sounds generous. The inquiry should ask how readiness slipped this far.

[Bruno Charpentier @MilTech_Lover]

The absence of plate tectonics is the key variable here. Earth recycles its carbon, Mars archives it. A terraforming roadmap that focuses on the source and ignores the sink is not serious engineering.

[Lacey @LaceyPresley]

Mars may not have simply lost its habitability.

It may have chemically dismantled it.

The Siderite Thermostat hypothesis suggests liquid water reacted with basalt + CO₂, locking carbon into carbonate minerals and weakening the very greenhouse needed to keep Mars warm.

A brutal feedback loop:

Water → carbonation → less atmospheric CO₂ → cooling → freeze.

With no plate tectonics to efficiently recycle that carbon, the process may have become increasingly one-way.

If that model holds, terraforming Mars is not as simple as releasing more CO₂.

Any engineered atmosphere would also have to defeat the Basalt Trap potentially through non-reactive super-greenhouse gases, engineered aerosols, or closed-loop paraterraforming.

Mars isn’t just an atmospheric problem.

It may be a planetary chemistry problem.

[Bruno Charpentier @MilTech_Lover]

Building one nosecone by hand is prototyping. Building an actual production line is industrializing. Five years to make that jump, that's what happens when you prioritize build cadence over paperwork.

[Nik Butler @NikolaiButler]

Not proud of the first nose production line for sn1 starship, but we made it work and it's pretty nice now in the factory 👌

[Bruno Charpentier @MilTech_Lover]

True, CO2 was dangerously low 18,000 years ago. But the issue today isn't the level, it's the speed. Ecosystems adapted over millennia, not decades. Using greening data to dismiss that difference is where the argument breaks down.

[Dennis Wingo @wingod]

18,000 years ago, 75% of plants (C3) almost died from low CO2.