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SpaceX's Elon Musk says Starlink user antennas will be like "UFOs on a stick"

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SpaceX CEO Elon Musk has teased the first detailed description of the Starlink antennas (“user terminals”) customers will need to connect to the massive satellite internet constellation, revealing a few new and unexpected details about the critical hardware.

Although nearly all public focus is currently (and understandably) on the production and launch of Starlink satellites themselves, that perspective actually glosses over a second element of the constellation that is at least as important. Starlink, after all, is designed to delivered high-speed, low-latency broadband internet to customers around the world, and that service will not just magically appear in the houses of interested consumers. Similar to satellite TV, customers will gain access to their Starlink internet service with an antenna that will have to be installed somewhere on or around the premises.

The challenge that SpaceX faces with the grounded side of Starlink is that – unlike the geostationary satellites that provide satellite TV – satellites in low Earth orbit (LEO) are visible from a specific point on the ground for just a handful of minutes each. Whereas satellite TV dishes simply need to be pointed at one unmoving spot in the sky, Starlink ground antennas will need to constantly change where they are pointed (or at least track constantly-moving and changing satellites) and do so seamlessly and with incredible reliability.

A step further and even more importantly, while SpaceX unequivocally needs to make its Starlink user terminals extremely capable, simple, and reliable, it will also need to find a way to mass-produce millions (ultimately tens to hundreds of millions) of units and keep the cost to consumers unprecedentedly low. At least before Musk’s January 7th, 2020 comment, it was believed that Starlink user terminals would have to rely almost entirely on high-performance phased-array antennas, referring to antennas that are steered electronically – i.e. without physically moving.

100% phased-array steering would likely result in the best possible user terminal from the standpoint of reliability and performance. However, full phased-array antennas – while making rapid progress – are still extremely expensive to manufacture compared to more basic alternatives, meaning that it could be an immense challenge – possibly much harder than building and launching Starlink satellites themselves – to mass-produce affordable user terminals under that paradigm. It’s possible that SpaceX has actually come to the same conclusion and is choosing to compromise with its first-generation user terminals, prioritizing time to market and cost per unit at the expense of peak performance and optimal reliability.

Competitor OneWeb may actually have a step up on SpaceX on that front, having reportedly already made great progress developing an exceptionally cheap flat-panel phased-array antenna capable of at least decent throughput (10-50 Mbps). On January 7th, Musk revealed that the current iteration of Starlink user terminals look like a “thin, flat, round UFO on a stick” and features “motors to self-adjust [and ensure it’s at the] optimal angle to view [the] sky.”

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The latter tidbit came as a bit of a surprise, given that nearly all cutting-edge phased-array antennas in development feature flat-panel designs and mounting hardware and pointedly avoid mechanical steering – one of the great benefits of phased arrays. It’s ultimately unclear what purpose a mechanical pointing motor would serve on a Starlink user terminal. If the terminal is centered around a true phased-array antenna, mechanical steering would be an almost vestigial addition. However, it’s possible that SpaceX has found a way to hybridize electronic (phased-array) and mechanical steering to produce user terminals that are exceptionally cheap and high-performance at the cost of a reliability risk (moving parts).

Ultimately, it looks like we will find out much sooner than later how exactly SpaceX’s Starlink user terminals work, among other details. Musk says that Starlink will be able to start serving customers in Canada and the Northern US with as few as four additional Starlink launches, meaning that some form of beta test could begin after Starlink V1 L6.

As of now, SpaceX has 1-2 more Starlink missions scheduled to launch later this month. If SpaceX averages two launches per month, Starlink could be serving its first customers as early as March or April 2020.

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Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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SpaceX readies Starship Flight 14 for a historic journey into uncharted territory

SpaceX finished Starship’s Flight 14 rehearsal, clearing the way for its first orbital flight Monday.

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Sunrise at Starbase. Starship is stacked for opportunistic full-stack testing ahead of Flight 14 via SpaceX
Sunrise at Starbase. Starship is stacked for opportunistic full-stack testing ahead of Flight 14 via SpaceX

SpaceX has cleared one of the last hurdles before Starship’s first trip to orbit. The company posted on X Thursday afternoon that its launch rehearsal for Flight 14 was complete, keeping the mission on track for Monday, September 28. The launch window opens at 7:15 a.m. CT at Starbase, Texas, and runs for 75 minutes.

A wet dress rehearsal is essentially launch day without the launch. Crews fill Booster 21 and Ship 41 with thousands of tons of extremely cold propellant, run the countdown nearly to ignition, then drain everything back out. It lets engineers catch leaks or equipment problems before anything leaves the pad. SpaceX still needs a launch license from the FAA before the stack, which stands 407 feet tall, can fly.

Flight 14 matters because of where it is going. All 13 previous Starship flights followed a suborbital path, which works like throwing a ball extremely high and far: the vehicle reaches space, but it is always on a course that brings it back down within about an hour. This time, Ship 41 will perform a short engine firing called an orbital insertion burn roughly 25 minutes after liftoff, giving it enough speed to keep falling around Earth instead of back into it. SpaceX plans about six laps at an altitude near 275 kilometers (171 miles) over nearly 10 hours, as Teslarati detailed when the mission was first announced.


Getting into orbit also means Starship has to prove it can get back out. The ship must relight a single Raptor engine in space to slow down for reentry. SpaceX says it will only attempt the orbital insertion burn after flight controllers confirm the hardware needed for that return burn has enough backup, and its flight plan includes health checks that could shorten the mission to two or five orbits.

Flight 14 is also the first to put working satellites into service. Flight 13 carried 20 Starlink V3 satellites in July, but they came back down with the ship because that mission never reached orbit. This time, 26 V3 satellites are meant to stay up and join the constellation within a few weeks. Together they add about 26 terabits per second of network capacity, which SpaceX says is roughly 10 times what a single Falcon 9 launch of older V2 Mini satellites adds. Three of them carry cameras that will photograph Starship’s heat shield in orbit to check for tile damage before reentry.

The hardware has changed too. Ship 41 flies with extra fasteners on tiles in the most vulnerable areas, fixes for gaps where superheated plasma slipped behind tiles, and curved tiles designed to reduce heating between them. Two tiles recovered from Ship 40 will fly again, the first reuse of any part of a Starship heat shield. Booster 21 carries better engine filtering and new relight software after ice clogged three center engines on the previous booster, leaving only eight of 13 engines to restart for its landing burn.

Ship 41 is targeting a splashdown in the Pacific Ocean west of Chile, a new recovery zone after several Indian Ocean landings, while Booster 21 aims for the Gulf. Neither will be caught by the tower on this flight. Elon Musk said in August that a ship catch was likely “in a few months.”

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Google just picked SpaceX for its first step into orbital AI

Google will launch its first Project Suncatcher AI satellite on SpaceX’s Transporter-18 rideshare next week.

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Google is about to put its own AI chips into orbit for the first time, and it is paying SpaceX to get them there.

The company said Thursday that the first in-orbit test of Project Suncatcher, its research effort to find out whether space can host large-scale AI computing, will fly next week on SpaceX’s Transporter-18 rideshare mission.

The satellite, called MVP, is about the size of a refrigerator and carries four of Google’s Tensor Processing Units, the same chips Google runs in its ground data centers. Google originally planned to launch two custom satellites in 2027, but chose to move faster by integrating its chips into a satellite.

MVP’s solar panels supply about one kilowatt of power, and Google will run Gemini models on the TPUs only in bursts of roughly 15 minutes before the chips shut down so the radiators can shed heat. In a blog post, Google said its Trillium TPUs survived vibration testing that mimicked sustained launch loads of up to 10g, with individual components seeing 50 to 100g, and handled a radiation dose greater than a five year mission would deliver.

SpaceX and Google mull massive partnership on Musk’s orbital data dream: report

Next week’s flight, slated for October 1, follows a relationship that became public in May, when Teslarati reported that Google was in talks with SpaceX for a launch deal tied to orbital data centers. Google also holds a stake of roughly 6% in SpaceX.

The two companies are chasing the same idea from very different starting points. SpaceX’s own orbital compute program is built around the AI1 satellite, a roughly 70 meter structure derived from Starlink V3 hardware that is designed for 150 kW of peak compute, about 150 times the power MVP will draw. Elon Musk has brushed off concerns about crowding orbit with those satellites, and SpaceX is building its Gigasat factory in Bastrop, Texas, to produce them, targeting an annualized rate of about 1 GW of space compute by the end of 2027.

Musk also posted on X on Thursday that “the amount of compute in space will obviously round up to 100% of all compute.”

Google has been more cautious in public. Its research estimates that launch prices need to fall below about $200 per kilogram before an orbital data center can compete with a ground facility on energy cost, a threshold the company believes could be reached around the mid 2030s. The Suncatcher team has said it expects the effort to remain a project rather than a product for years, which leaves the first real test of its hardware riding on a rocket from the company with the most aggressive timeline in the field.

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Tesla Cybercab gets initial tie-in to localized, in-house cathode plant

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Credit: Tesla

Tesla has taken another concrete step toward owning its battery supply chain, and it’s doing so with what is perhaps the most important vehicle in its short-but-storied history.

On September 23, Tesla announced that it has officially built the first Cybercab with cathode material produced in-house at the company’s first cathode plant in the U.S., and the first in the U.S. overall.

Active cathode material is the most expensive piece of a lithium-ion battery cell, and it often accounts for more than a third of cell cost. For years, the industry sourced a majority of it from Asia, but Tesla’s decision to make it in the United States bodes well for the Cybercab project. This is the latest chapter in Tesla’s vertical integration strategy, which began in public at Battery Day in 2020.

At the Battery Day Event, Elon Musk said the company would build a North American cathode plant and overhaul the process to cut costs and waste, while also making some of the most powerful and long-lasting cells in the industry.

The Austin facility took years to appear. Tesla filed permits for “Project Cathode” in 2022 on land near Giga Texas. By mid-2022, the building frame was up and Tesla later invested hundreds of millions of dollars as part of a larger expansion of the Giga Texas plant. The company stated it was operating the first large-scale cathode production facility in North America to supplement 4680 cell production.

One month later, that material reached a finished Cybercab.

The timing of this breakthrough is monumental for the Cybercab program. As Tesla officially launched the first Cybercab rides to the public earlier this month, production of the ride-hailing-geared vehicle is moving forward on the planned S-curve that CEO Elon Musk told everyone to expect.

Nevertheless, packs of Cybercab units have been spotted throughout the United States, in an effort to potentially activate the fleet as soon as the company gains regulatory approval in various geographic areas.

On top of that, Tesla owning the cathode step and pairing it with its own in-house lithium from the Gulf Coast refinery shortens the supply chain that once stretched thousands of miles and subjects every pack to fewer external price shocks and geopolitical risks.

Tesla is not yet independent of all of its foreign suppliers, as some precursor metals come from mines and chemical plants. But the first in-house cathode Cybercab shows the company is closing the most expensive and most concentrated gap in its battery production efforts. For a vehicle like Cybercab to operate at a high utilization within the Robotaxi network, that control over cost is so crucial.

It is arguably as important as the software that drives it.

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