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SpaceX operational astronaut launch debut back on track after “nail polish” delay

SpaceX's Crew-1 NASA astronauts pose in front of the Crew Dragon that will ferry them to the International Space Station just days before the spacecraft shipped to Florida. (SpaceX)

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In a new NASA briefing, SpaceX vice president of build and flight reliability Hans Koenigsmann was able to explain in far more detail why a recent last-second Falcon 9 launch abort happened and how it wound up delaying the company’s first operational astronaut launch.

Now scheduled to lift off no earlier than (NET) 7:49 pm EST (00:49 UTC) on Saturday, November 14th, SpaceX’s Crew Dragon Crew-1 mission was originally expected to launch in late September, October 23rd, and October 31st. On October 2nd, however, a new Falcon 9 booster – sibling to Crew-1’s own new booster – automatically aborted its GPS III SV04 satellite launch attempt just two seconds before liftoff. The rare last-second abort was quickly blamed on “unexpected pressure rise in the turbomachinery gas generator” by CEO Elon Musk.

Likely built side-by-side with faulty GPS III SV04 Falcon 9 booster B1062 at SpaceX’s Hawthorne, California factory, Crew-1 Falcon 9 booster B1061 was almost immediately inspected to search for any commonality once the cause of the abort was better understood.

SpaceX COO and President Gwynne Shotwell stands in front of the Falcon 9 booster that will soon ferry four astronauts to the ISS. (TIME/SpaceX)

Just one week before the latest briefing, NASA human spaceflight program administrator and former Commercial Crew Program manager Kathy Lueders revealed in a statement on Twitter that SpaceX was still analyzing the cause of the abort but had already determined that at least one Crew-1 booster engine would need to be replaced, as well as one engine on Falcon 9 booster B1063.

Crew-1 Falcon 9 booster B1061 arrived in Florida on July 14th. (SpaceX)
Falcon 9 booster B1063 was spotted on its way west from McGregor, Texas to Vandenberg Air Force Base, California in August. (D. Stamos)

Now, during NASA’s October 28th Crew-1 briefing, SpaceX’s Koenigsmann revealed that the company had ultimately decided to replace not one but two of Crew-1 booster B1061’s nine Merlin 1D engines. Thanks to Falcon 9’s namesake nine-engine booster design and SpaceX’s prolific rocket factory, that process was completed extraordinarily quickly, simply requiring the redirection of already qualified Merlin 1D engines from a fairly large pool. Based on Koenigsmann’s phrasing, SpaceX has already installed both replacement engines on the Crew-1 booster.

What, though, caused GPS III SV04’s launch abort and how did that affect Crew-1?

Rocket engine vs. “nail polish”

According to Koenigsmann, in the course of the rapid and complex mechanical and electrical ballet preceding Falcon 9 first stage ignition, the rocket’s autonomous flight computer observed that two of the GPS III SV04 booster’s nine Merlin 1D engines appeared to be running ahead of schedule, so to speak. The computer immediately halted the ignition process to avoid what could have otherwise been a “hard” (i.e. stressful or damaging) start. SpaceX quickly began inspecting the rocket within 24 hours but was unable to detect anything physically or electrically wrong with Falcon 9’s Merlin 1D engines and engine section.

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A Merlin 1D engine is inspected and tested in McGregor, Texas. (SpaceX)

Out of an abundance of caution, SpaceX removed both misbehaving engines and shipped them to its McGregor, Texas development and test facilities where – somewhat miraculously – the same premature startup behavior was replicated on the test stand. After a great deal of increasingly granular inspections, SpaceX finally narrowed the likely cause down to a tiny plumbing line feeding one of the engine’s gas generator relief valves. In a seemingly random subset of relatively new Merlin 1D engines, SpaceX eventually discovered that a supplier-provided relief valve line was sometimes clogged by a protective lacquer Koenigsmann likened to “red nail polish.”

A Merlin 1D is prepared at SpaceX’s Hawthorne factory. The small cylindrical tube on the side is the engine’s gas generator. (SpaceX)

Used to selectively exclude parts of the engine tubing during a surface finishing process known as anodization, the lacquer was either unsuccessfully removed on a random selection of engine parts or was accidentally channeled into a blockage by over-enthusiastic cleaning. Ultimately, for whatever, reason that miniscule blockage was enough to cause affected Merlin 1D engines to consistently attempt to ignite a tiny fraction of a second early.

Crucially, when SpaceX discovered the possible cause and cleaned out the blocked plumbing, each previously affected Merlin 1D engine performed perfectly, all but directly confirming both the cause and the cure for Falcon 9’s October 2nd abort.

A Falcon 9 Block 5 booster’s engine section and heat shield. (SpaceX/Discovery)

Astronauts enter quarantine

In anticipation of SpaceX seemingly simple solution to the gas generator problem, NASA Commercial Crew Program manager Steve Stich revealed that SpaceX’s Crew-1 mission astronauts – Shannon Walker, Victor Glover, and Mike Hopkins, and JAXA (Japanese) astronaut Soichi Noguchi – had begun routine prelaunch quarantine procedures in anticipation of a November 14th launch.

NASA astronauts Shannon Walker, Victor Glover, and Mike Hopkins, and JAXA (Japanese) astronaut Soichi Noguchi are nearly set to fly on Crew-1. (SpaceX)
Crew-1 will follow in the fresh footsteps of NASA astronauts Bob Behnken and Doug Hurley’s near-flawless Demo-2 Crew Dragon launch and landing debut. (NASA/Bill Ingalls)

Stich also offered a more specific Crew-1 schedule, beginning with an integrated Falcon 9 and Crew Dragon static fire test NET November 9th and a full dry dress rehearsal on November 11th before the first launch attempt on November 14th. Notably, thanks to coincidental orbital dynamics, a successful launch on November 14th would enable Crew Dragon to raise its orbit and rendezvous with the International Space Station a brisk eight and a half hours after liftoff – three times quicker than the more common 27.5-hour transit.

Stay tuned for updates as the mission’s launch date approaches.

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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Tesla rolls out tasty new trade-in deal for a limited time

Tesla has rolled out a tasty new trade-in deal in the United Kingdom for a limited time, knocking just over the equivalent of $5,000 off of the price of a new or inventory Model 3 or Model Y.

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Credit: Grok Imagine

Tesla has rolled out a tasty new trade-in deal in the United Kingdom for a limited time, knocking just over the equivalent of $5,000 off of the price of a new or inventory Model 3 or Model Y.

The move, which could be a great way to incentivize sales in the United Kingdom, will take off £3,750 ($5,043) from the price of either of Tesla’s two most popular models, but it’s only valid until March 31, 2026. It requires the order and delivery to take place within the first quarter to qualify for the discount.

The bonus is designed to lower the cost barrier for switching to electric vehicles, stacking the £3,750 on top of the actual trade-in value of any eligible car — this includes petrol, diesel, or even an EV from another automaker. It applies to both new builds and inventory vehicles, including test drive and showroom models, but excludes certified pre-owned Teslas.

This promotion comes amid intensifying competition in the European EV sector. Chinese giant BYD, which snatched the EV sales title from Tesla for 2025, has been aggressively expanding in the European market, undercutting prices and capturing market share with its widely affordable models, including the Seagull.

Tesla’s strategy echoes similar incentives that have been offered in other markets at different times. With UK EV adoption hovering around 20 percent of new car sales in 2025, such deals could accelerate the transition, especially as government mandates phase out fossil fuels by 2035.

There have been enthusiastic reactions to the offer on X, the social media platform owned by Tesla CEO Elon Musk. These incentive programs are few and far between, and are never predictable in terms of availability. However, Tesla could be using this discount to get the year off to a good start.

For potential buyers, the deal underscores Tesla’s agility in a competitive landscape. As EV infrastructure improves and battery tech advances, incentives like this could tip the scales for those who might be more hesitant to make the jump.

With Q1 2026 deliveries ramping up and Tesla coming off a yearly decline in deliveries, the company is undoubtedly looking to push things forward and get the year off to a great start.

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Lucid and Uber team with Nuro for new robotaxi program with Gravity SUV

The plan currently is to launch it to the public in the Bay later this year.

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Credit: Lucid

Lucid and Uber are teaming up with Nuro to launch an autonomous robotaxi program utilizing the automaker’s Gravity SUV. The project will be unveiled at CES 2026, introducing an in-cabin rider experience completely designed by Uber, the world’s largest ride-sharing service.

Back in 2025, the partnership between the three companies was announced, aiming to launch a unique ride-sharing platform using over 20,000 Lucid vehicles equipped with the Nuro Driver technology. The vehicles are owned and operated by Uber.

The companies have already initiated some testing in the San Francisco Bay Area, which is a big step in the right direction for the project. The plan currently is to launch it to the public in the Bay later this year. Nuro will lead the testing using robotaxi engineering prototypes that are supervised by autonomous vehicle operators.

Currently, there are over 100 robotaxis in the Engineering Test Fleet.

The Gravity vehicles are fitted with a next-gen sensor array featuring high-res cameras, solid-state LiDAR sensors, and radars that will provide a 360-perception model, as well as a “purpose-built roof-mounted halo designed to maximize sensor visibility,” which is seen on top of the Gravity unit above.

The halo also has integrated LEDs to help riders more easily identify the correct vehicle by displaying their initials. The halo will also provide clear status updates from pickup through dropoff.

These units for the robotaxi program between the three companies will start being produced later this year at Lucid’s Arizona AMP-1 factory.

Uber chose the Lucid Gravity specifically due to its “unprecedented comfort” and its reputation, as it was named to Car and Driver’s 10 Best for 2026. But Uber is customizing some things for the Gravity so that it is specifically catered to robotaxi riders:

  • For the first time, Uber is designing the in-vehicle rider experience, which will include interactive screens with entertainment and climate control options, as well as support contacts and vehicle maneuver requests, like a request to pull over.
  • It will also have in-vehicle visualization, showing what the robotaxi sees and its path in real-time. This will be a nice transition for those who are skeptical about driverless vehicles, and will show what the vehicle and its sensors, LiDAR, and cameras see.
  • The Gravity is also a sizeable SUV, which will give riders space for themselves and their luggage.

This is the latest application of a ride-hailing platform that leans on autonomy for its operation, essentially phasing out the need for human drivers in various markets, starting with the Bay Area.

More companies are dipping their toes in the project, giving them the opportunity to establish some early momentum, as there are only a handful of companies that are currently operating this in the United States. Uber, Lucid, and Nuro aim to be the next, and initiating this program at this time is big for their chance at success.

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Tesla Cybercab test fleet expands in Austin and Bay Area

In total, the Robotaxi fleet is comprised of 139 total vehicles in both Austin and the Bay Area. The vast majority of these units are Model Y cars, but the Cybercab is the most recent addition to the fleet. 

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Credit: Adan Guajardo

Tesla has expanded its fleet of Cybercab test units in both Austin and the Bay Area of California, as the vehicle is heading toward the first production stages, hopefully early this year.

As the first few units were spotted in Austin late last year, Tesla is now operating seven total Cybercab units in testing, three of which were spotted over the weekend in Texas. Bay Area testing just started on January 3, with both units also being added to the fleet on Saturday and Sunday.

In total, there are seven Cybercabs now operating, according to Robotaxi Tracker, each with different license plates that have been observed over the course of the last several weeks; the first unit was spotted in Austin on December 18.

The expansion of the Cybercab test fleet is a slow but steady process that Tesla is taking to get the car on public roads ahead of its initial production stages.

CEO Elon Musk said last week that Tesla has already started some test production phases of the vehicle at Gigafactory Texas, which is located outside of Austin.

Tesla Cybercab tests are going on overdrive with production-ready units

However, it will likely be some time before Tesla actually adds it to the fleet for rides that are available to the public. Tesla plans to build it without a steering wheel or pedals, so the company will have to reach Level 5 autonomy at that point before customers can hail rides and take it to their destination.

In total, the Robotaxi fleet is comprised of 139 total vehicles in both Austin and the Bay Area. The vast majority of these units are Model Y cars, but the Cybercab is the most recent addition to the fleet.

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