spacetech founder @muspacetech / aerospace bs & mech ms ucla / tech 🚀/ sports 💯

Joined January 2017
2026 for me
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This is how @NASA does game day. Roll Tide! 🚀🏈
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Moon base 💯
LIVE: @NASAAdmin and agency leaders are sharing the latest updates on next year's Artemis III mission and our plans to return astronauts to the surface of the Moon by 2028. xitter.cf/i/broadcasts/1RJZzBdZY…
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Baby Bells 🔔
AT&T’s CEO saying Starlink direct to cell will fail will age like ArianeSpace’s CEO saying rocket reusability was a “dream”
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Full duration 33-engine static fire for the Super Heavy booster preparing for Flight 15
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James Yenbamroong retweeted
Starship Flight 15 static fire
Full duration 33-engine static fire for the Super Heavy booster preparing for Flight 15
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James Yenbamroong retweeted
Replying to @chamath
And what binds power? • land • permits • grid access • transformers and switchgear • noise • clean air • supply chain • fuel security • casting machines • suitable large lathes for turning shafts • residential priority • community political power All the best sites are now taken, and every year the marginal development site gets worse and worse.
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James Yenbamroong retweeted
This is a fuller list of the limitations of supercomputer buildout. If anything is missing, however seemingly trivial, the compute doesn’t work.
Replying to @chamath
And what binds power? • land • permits • grid access • transformers and switchgear • noise • clean air • supply chain • fuel security • casting machines • suitable large lathes for turning shafts • residential priority • community political power All the best sites are now taken, and every year the marginal development site gets worse and worse.
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This is changing internet infrastructure as we know it, no more fiber cuts, always connected. Affordable last mile spectrum and productivity boosting devices such as humanoid robots will be a true game changer.
Replying to @WOLF_Financial
Starlink V3, which only just started launching, will have ~100 times more bandwidth than the current V2 system
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James Yenbamroong retweeted
First time I've seen a legit infographic of Starship pushing Orion to the moon! They're also already modifying Orion to be able to handle being pushed by Starship. I like that things are being modified to follow common sense and not stuck in the "well it can't do that" as an excuse to do things poorly and compromised.
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James Yenbamroong retweeted
The BIG THREE finally realized a company that — flies and lands reusable rockets on drone ships and land, — owns and operate two-thirds of all operational sats in orbit, — is busy with a Starship program to make humanity multi-planetary, won't just go in blindly with Starlink Mobile — in fact, SpaceX obviously did their homework...🛰📲 ...no wonder we see the BIG THREE suddenly revert to dirty play in an attempt to try and block SpaceX! And it comes after openly boasting for months Starlink Mobile will never by a threat as it won't work indoors. Watch this space, it's about to get very interesting... @elonmusk
AT&T, Verizon, and T-Mobile are jointly lobbying the FCC to preserve existing rules as @SpaceX moves closer to launching its own independent cellular network that would compete directly with the three major U.S. carriers. On Oct 20th, reps from all three major U.S. wireless carriers met with FCC officials to push back against proposed changes that would give satellite companies more freedom to offer cellular service. The carriers urged the FCC to: • Block satellite companies from using certain 5G frequencies currently used by wireless carriers. • Keep rules requiring satellite companies to get permission from wireless carriers before using their licensed spectrum. • Allow wireless carriers to maintain control over these agreements, including the ability to end them. • Reconsider proposed interference limits to protect existing cellular networks. Based on all the public communications from these carriers, and the lobbying, they are clearly worried that SpaceX's @Starlink Mobile network is going to be a major competitor to them. Starlink Mobile will become the first network operator to deploy both satellite and terrestrial spectrum. The FCC recently announced that they are considering new rules that could make it easier for satellite companies like SpaceX to offer cellular service without relying as heavily on existing wireless carriers, so this is partly what the three big carriers are fighting against.
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Great explanation video.
Elon Musk's New Obsession Is Actually Crazy
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10 launches away from IPO.
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James Yenbamroong retweeted
🛰🛰🛰 A great group of investors just invested $250M in next-gen GPS from Xona. On Tuesday, SpaceX launched 6 Xona sats, all operational. You can see one deployed in space in the last image, adorned with team signatures. Xona holds the first and only FCC license to operate a commercial GPS service. By flying a constellation closer to Earth, the service is 100x more powerful, so it even works indoors. And more precise, to cm resolution. And more secure and robust to spoofing. And it’s backward compatible with existing GPS systems. Commercial service begins in 2027. Excerpts from Forbes today: “CEO Brian Manning, a former SpaceX engineer who cofounded Xona in 2019 with seven fellow alums of Stanford’s aeronautics and astronautics department decided to raise again after “seeing an immense amount of incoming demand, which I think is a reflection of the progress we have made. We started the year with technically an empty warehouse, and now we have a functional satellite factory.” Jurvetson was an early investor and former board member in Tesla and has a stake in Elon Musk’s Boring Company. Xona is his third space investment, with satellites apparently becoming something of a specialty. Satellites have three major markets, each of which involves a distinct set of hardware and a tailored altitude. Jurvetson’s portfolio neatly spans the trifecta: SpaceX’s Starlink offers communication services; geospatial imaging company Planet photographs Earth; and Xona is working to disrupt the third industry segment, navigation, which has historically been dominated by government-run services like GPS. The U.S. Defense Department developed GPS in the 1970s. The system identifies locations using a constellation of satellites that revolve at a mid-altitude orbit; it also has the benefit of being free. But the flaws of GPS are becoming impossible to ignore. Because its signals are fairly weak, new technologies are increasingly able to jam them with competing transmissions or even “spoof” them with imitation radio waves. This is a particular problem on the modern battlefield—Russia’s electronic warfare tactics are forcing Ukrainians to supplement GPS with backup navigation systems—but it’s disrupting civilian life as well, including commercial travel, which still overwhelmingly uses GPS. “The world’s in a pretty dangerous place relying on GPS alone,” says Manning. Xona is working to create a stronger and more reliable alternative. Following the business model that Starlink popularized, it plans to mass-produce low-orbit satellites, link them into a commercial network and then sell its services. It expects to deploy 258 satellites into an initial constellation it’s calling Pulsar, which will orbit at a lower altitude than GPS and therefore transmit more powerful signals. Pulsar’s wide-bandwidth radio waves and cutting-edge software will also make it particularly accurate; it will offer centimeter-level precision, which GPS can typically only achieve after applying correction data. “Fortune favors the bold,” says Jurvetson, who returned to Forbes’ Midas list of top venture investors. “We’ve seen entirely new commercial markets emerge in space, from rideshare launches to daily observation of the entire Earth, that few could have imagined before SpaceX and Planet did it. Xona has the same level of ambition: bring commercial innovation to a domain historically reserved for nation-states.” This $250 million venture round—which brings the company’s total funding to over $570 million—comes just days after Xona hit a key milestone. On Tuesday, it officially kicked off the rollout of its commercial network by launching six satellites into orbit on one of SpaceX’s Falcon 9 rockets.” Company: XonaSpace.com
i'm proud to back @xonaspace's $250M Series D alongside Future Ventures. I've long admired @FutureJurvetson and i'm excited to work with him on Xona. He's arguably the most successful space investor ever, having been very early at SpaceX (still on the BOD!) and Planet. GPS is some of the most important infrastructure on earth, but it was designed decades ago for a world of human users. the next wave of autonomy (robots, drones, self-driving vehicles) needs positioning and timing that's far more precise and harder to jam. Xona is rebuilding it ground up. Move satellites to LEO, design spacecraft, signal and ground systems together, and build the satellites in-house so the network keeps improving. Early results: sub-2cm accuracy, compatibility with existing receivers via firmware upgrades, first-of-its-kind FCC spectrum authorization, and the commercial constellation now going up, with customer service starting in 2027. congrats Brian (@FoundTheSpace) and the whole team. this is foundational infrastructure for the physical AI era. xonaspace.com/news/series-d
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James Yenbamroong retweeted
.@MercedesAMGF1 is the leading F1 team and the best business in the sport. Toto Wolff is the only owner-principal. I was excited to sit him down and understand his business background, how they run engineering under the constantly-changing rules, his views on the industry, and how he's preparing for succession. 00:00:22 Spotting driver talent 00:06:24 Engineering and team selection 00:09:11 The F1 cost cap 00:25:21 Toto’s early investing career 00:38:15 Running Mercedes as an owner 00:46:47 Why F1 team values exploded 01:08:24 Succession planning
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James Yenbamroong retweeted
The wheels are in motion for Moon Base! From robotic rovers to lunar terrain vehicles, our latest update highlights progress on the mobility systems that will support early Moon Base development and Artemis exploration. See what's rolling: nasa.gov/missions/moon-base/…
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At some point, we’ll build nuclear reactor core.
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James Yenbamroong retweeted
Three major announcements today: 1/ our first supersonic turbine core is complete and shipping to test 2/ our 2GW Superpower Superfactory in south Denver is already making parts 3/ we are building our own advanced all-digital foundry to make single crystal turbine blades
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James Yenbamroong retweeted
The Sun in X-rays from NuSTAR
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