Some model predictive control using my matrix/math library.

Today on the #arXiv: Yang et al. 2025, "Spectroscopic Characterization of Interstellar Object #3I/ATLAS: Water Ice in the Coma" - arxiv.org/abs/2507.14916 #3I is putting out water ice along with organic and silicate dust. As expected for a comet.

Ukraine has continously asked for 11-20 Patriot batteries. Here's what kind of coverage you can get with 11. Ukraine has 6~ batteries already, the remaining 5 would cost something like (barring missiles) $1.7-2B. A Patriot batteries goes for $300-400M (export/local costs are the same).

Writing a Rust based matrix library with a REPL.

Bridge Colby has his head too far up his ass to understand this, even when China says it aloud. It is imperative Russia be defeated swiftly and overwhelmingly so that our resources can be prioritized to China. We cannot afford a two front Cold War in both Europe and Asia.

UPDATE on our new interstellar friend #A11pl3Z: Citizen scientist Sam Deen has found earlier observations of from June 25-28, from the ATLAS telescope! Now with 6 days' worth of data, the eccentricity of A11pl3Z's trajectory is narrowed down to e=10.4 ± 1.1! ... that's undoubtedly interstellar. 🔭☄️

As a CIA officer and Pentagon official by training, I believe that the single, greatest security threat to the United States is the shrinking middle class here at home. Today, I laid out my Economic War Plan.

Casual find when thrifting, has performance, guidance laws, and more.

iykyk

I find more CUDA tutorials in Chinese than I do in English.

Relay Deployed

For better or for worse I have discovered steady state error in Model Predictive Control.

A really interesting report on PLA concepts for Drone Swarms. www.airuniversity.af.edu/CASI/Display...

Today we are going learn about Light Exo-Atmospheric Projectile's first flight test. So what is LEAP? LEAP was a program aimed at developing extremely lightweight and small KKVs. The program first spawned from an SDI effort develop a light kill vehicle for ground or space based hyper-velocity guns.

Rep HASC/SASC $150B Defense Supplemental came out a few nights ago. For the Naval end we got: $4.2B for naval infrastructure stuff (construction, workforce, stuff of that sort) 1 Extra VA Boat in FY27 2 Extra DDG-51s $1.8B for LSM not sure how many this covers. 1 LPD-17 (LPD-36) 1 LHA (LHA-11)

Model predictive control in CUDA has really stretched my patience with coding.

The carousel admin begins

Orbital mechanics in action: MEV-1 is moving steadily towards its new destination without leaving its former target.

Me sometimes

Crewed Mars mission concept using multiple launches of the future Long March 9 rocket. m.weibo.cn/status/51547...

These things exist? www.phoronix.com/news/IBM-z17...

Vast dropped a vid. youtu.be/AkjkBigTjNw

Jared is a breath of fresh air to the discourse.

Hype: www.youtube.com/watch?v=OBhs... projectkuiper.bsky.social

The University of Michigan dropped a pretty cool simulation. umfieldrobotics.github.io/OceanSim/

Rendering issue, and some kind of integration error (maybe gravity model?) Otherwise, I've been able to show equatorial and polar orbits, thrust and adding three more DOFs next.

On the 24th of March, the Missile Defense Agency carried out the long awaited FTX-40, a tracking exercise involving a MRBM-T5 (Medium-Range Ballistic Missile) target carrying HTV-1 (Hypersonic Target Vehicle 1). The target was dropped from the rear of a C-17.

May this accelerate our funding

Chinese Stealth Balloons won't see her coming.

Here is a "contour" plot that summarizes what these new measurements have to say about the behavior of dark energy, + my annotation. Either a lot of people are misunderstanding something big about the data, the Universe is playing a cruel trick on us, or LCDM is wrong.

The day that the United States decides to give budgets to Engineers (Ed Teller, Von Braun, Knudsen) is the same century we return to prominence.

CUDA, BLAS, Naive, Stride, Coarse Stride, so many options...

We're gonna talk about something fun, cool, not political tonight. The stuff I wanted to use this account for and have degrees and papers and a career in. We're gonna talk about why steel is a wonder material, probably the material of the future, not just the last century. Yes, there's a graph.

The same company that built the Asian carp electric wall is building an Electromagnetic Vertical Launch System for the US Navy.

I hate floating point.

Why do I spend my nights fixing wavy lines...

@macronofficieux.bsky.social, is addressing France. This is an english stream. www.youtube.com/watch?v=jMSc...

GO FIREFLY @firefly-aerospace.bsky.social

Sorry Greece?

Firefly lunar landing stream link: www.youtube.com/live/ChEuA1A...

"Incoming transmission!" 📡 Classic Command and Conquer games are now open source—ready for modding, preservation, and innovation! Read more: ea.com/games/comman... Dive into the code: github.com/electronicarts

The ISS built SpaceX. The NASA Astronaut Corps has design authority over parts of capsule engineering. Anyone who knows Contractor/Government relationships knows that a partnership is built and maintained. They can also be broken overnight.

Dear Non-Fascist Europeans, The current US leaders believe they're allied with fascists inside your country against you, not allied with you against foreign invasion and threats to democracy. I'm sorry, I wish it weren't true, but it is. You really need to adjust. Sincerely, Non-fascist Americans

More details on this shockingly sloppy episode.

Build a technical workforce to meet our challenges. We talk about scale, we talk about need, we talk about requirements, the path to capability is a path of discovery.

Something I'm working on.

As requested: A thread on the birth of plutonium, the incredibly rapid work done to develop the new metal, and the human experiences - and human costs - of the scientists and techs who did the work. In particular, the untold stories of my kindred metallurgist spirits at Los Alamos. #nukesky 1/🧵

Lawerence Livermore National Labs is now the proud owner of the most powerful supercomputer in the world! youtu.be/Q8wtuk3XPWM

Wild.