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SpaceX delays Starlink launch to Sunday for “constellation optimization”

Starlink 2-4 will reportedly debut a new Falcon 9 booster. (SpaceX)

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3 years ago

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SpaceX has revealed a new and mysterious reason to delay its own rocket launch: something called “constellation optimization.”

Known as Starlink 2-4, the mission is now scheduled to launch a batch of 51 Starlink V1.5 satellites to a semi-polar Earth orbit no earlier than (NET) 8:15 am PST (16:15 UTC) on Sunday, January 15th. That represents a big shift in launch timing, as more recent attempts were aiming to lift off around 7-8 pm. A significant time change often implies that a launch is targeting a completely different destination, but data provided by SpaceX suggests that that’s not the case, raising more questions.

Starlink 2-4 is not new to launch delays. Originally scheduled to launch in November 2022, unspecified issues with the rocket caused SpaceX to indefinitely delay the mission. Launches for NASA and an Israeli company then took precedence, pushing Starlink 2-4 into early 2023. SpaceX announced a target of January 9th, but that attempt was called off by poor weather in the Pacific Ocean, where the mission’s Falcon 9 booster is scheduled to land.

SpaceX then delayed the mission from January 10th to the 11th “to take a closer look at data from second stage.” On January 11th, SpaceX delayed the mission to January 14th “to allow additional time for pre-launch checkouts.” Less than four hours later, SpaceX delayed the mission again, settling on the current January 15th target and debuting “constellation optimization” as a rare new cause of launch delays.

Starlink’s five Gen1 shells.

Logical speculation suggested that constellation optimization – combined with the major timing change – could have referred to a decision to launch Starlink 2-4 to a different orbital shell. SpaceX’s Starlink Gen1 constellation has five distinct shells, and the company’s Vandenberg Space Force Base (VSFB), California pad can theoretically launch to all of them. SpaceX’s Starlink V1.5 satellites are also theoretically identical, meaning that any satellite can launch to any shell and do its job without issue.

However, updated orbit data (Two Line Elements or TLEs) disseminated by SpaceX shows that Falcon 9 is still scheduled to launch Starlink 2-4 to a nearly identical orbit and thus the same Group 2 shell as before. “Constellation optimization” could instead refer to changing which planes the same Group 2 satellites end up at, tweaking where and when their added coverage will be felt most by Starlink internet users.

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Next Spaceflight reports that Starlink 2-4 will use Falcon 9 booster B1075, marking the second time the company has debuted a new Falcon booster on an internal mission. Up until very recently, new Falcon boosters were almost always reserved for NASA or the US military, SpaceX’s most conservative customers. But SpaceX’s program of Falcon booster reuse has become so successful and so routine that even NASA and the military appear to be ambivalent about taking advantage of the first launch of a new Falcon 9.

B1075 will attempt to land on drone ship Of Course I Still Love You (OCISLY) around 662 kilometers (411 mi) southwest of California, off of Mexico’s Baja Peninsula. SpaceX will broadcast the launch and landing live, beginning around 8:13 am PST (16:13 UTC) on Sunday if the mission can avoid further delays.

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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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Tesla begins Holiday Update rollout with some surprise features

On Monday, just a few days after Tesla first announced the Holiday Update, people started reporting that it was being deployed to owners.

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4 hours ago

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December 9, 2025

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Credit: Grok

Tesla has started the rollout of the 2025 Holiday Update, as several owners reported it had arrived in their cars via a software update.

Tesla’s Holiday Update is rolling out as Software Version 2025.44.25.1, and includes several new features. We did an extensive breakdown of what was included in another article, but we’ll list the new additions below:

  • Grok with Navigation Commands (Beta) – Grok will now add and edit destinations.
  • Tesla Photobooth – Take pictures inside your car using the cabin-facing camera
  • Dog Mode Live Activity – Check on your four-legged friend on your phone through periodic snapshots taken of the cabin
  • Dashcam Viewer Update – Includes new metrics, like steering wheel angle, speed, and more
  • Santa Mode – New graphics, trees, and a lock chime
  • Light Show Update – Addition of Jingle Rush light show
  • Custom Wraps and License Plates – Colorizer now allows you to customize your vehicle even further, with custom patterns, license plates, and tint
  • Navigation Improvements – Easier layout and setup
  • Supercharger Site Map – Starting at 18 pilot locations, a 3D view of the Supercharger you’re visiting will be available
  • Automatic Carpool Lane Routing – Navigation will utilize carpool lanes if enabled
  • Phone Left Behind Chime – Your car will now tell you if you left a phone inside
  • Charge Limit Per Location – Set a charge limit for each location
  • ISS Docking Simulator –  New game
  • Additional Improvements – Turn off wireless charging pad, Spotify improvements, Rainbow Rave Cave, Lock Sound TRON addition

On Monday, just a few days after Tesla first announced the Holiday Update, people started reporting that it was being deployed to owners.

It seems the release is a bit of an apology to a particular group, as it has only made its way to Hardware 3 vehicles, particularly the ones using the AMD Ryzen chip.

Tesla has excluded FSD-purchased and subscribed vehicles that are utilizing Hardware 3, so it seems there is a strategy to this limited rollout.

Two Surprise Additions

Tesla has added two additional features with the Holiday Update, which include a new Storage Space for Dashcam feature that shows how much space you have used and remaining on your USB drive.

Additionally, Tesla gamified Supercharging with a new “Charging Passport” feature, which we reported on earlier today.

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Tesla announces major milestone at Gigafactory Shanghai

First deliveries started in December 2019, with the first units being given to employees. By the end of 2020, the plant was building cars at a run rate of around 150,000 vehicles annually.

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7 hours ago

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December 8, 2025

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Credit: Tesla

Tesla has announced a major milestone at its Chinese manufacturing facility, Gigafactory Shanghai, confirming on Monday that it had built its four millionth vehicle.

Tesla Gigafactory Shanghai first started building cars back in October 2019 with Model 3 assembly, just ten months after the company broke ground on the plant’s 86-hectare piece of land.

First deliveries started in December 2019, with the first units being given to employees. By the end of 2020, the plant was building cars at a run rate of around 150,000 vehicles annually. Production continued to ramp up, and by September 2023, less than three years after it started building Tesla’s EVs, it had built its two millionth vehicle.

Fast forward to December 2025, and Tesla has confirmed that four million cars have rolled off of production lines at the plant, a major milestone in the six short years it has been active:

The capacity at Giga Shanghai is exceeding 950,000 vehicles per year, and this year, the company has delivered 675,000 cars through the first three quarters. It is also the only plant to manufacture the Model Y L, a longer wheel-based configuration of the all-electric crossover that is exclusive to the Chinese market.

Gigafactory Shanghai’s four million cars have not all stayed within the domestic market, either. For a considerable period, the factory was exporting a significant portion of its monthly production to Europe, helping Gigafactory Berlin supplement some Model Y volume and all of its Model 3 deliveries. This is due to the Berlin plant’s exclusive production plans for the Model 3.

The site is one of the most crucial in the company’s global plans, and Gigafactory Shanghai’s incredible pace, which has led to four million production units in just about six years. It’s fair to say that it won’t be long until we’re seeing Tesla celebrate the plant’s five millionth vehicle produced, which should happen sometime late next year or in early 2027, based on its current manufacturing pace.

The company also builds the Megapack on the property in an adjacent Megafactory.

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Tesla gamifies Supercharging with new ‘Charging Passport’

It will also include things like badges for special charging spots, among other metrics that will show all of the different places people have traveled to plug in for range.

Published

18 hours ago

on

December 8, 2025

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Credit: MarcoRP | X

Tesla is gamifying its Supercharging experience by offering a new “Charging Passport,” hoping to add a new layer to the ownership experience.

While it is not part of the Holiday Update, it is rolling out around the same time and offers a handful of cool new features.

Tesla’s Charging Passport will be available within the smartphone app and will give a yearly summary of your charging experience, helping encapsulate your travel for that year.

It will also include things like badges for special charging spots, among other metrics that will show all of the different places people have traveled to plug in for range.

Tesla will include the following metrics within the new Charging Passport option within the Tesla app:

  • Charging badges: Iconic charging badges for visiting places like the Tesla Diner, Oasis Supercharger, etc., Explorer Badge, and more
  • Total Unique Superchargers Visited
  • Total Charging Sessions
  • Total Miles Added during Charging Sessions
  • Top Charging Day
  • Longest Trip
  • Favorite Charging Locations

This will give people a unique way to see their travels throughout the year, and although it is not necessarily something that is needed or adds any genuine value, it is something that many owners will like to look back on. After all, things like Spotify Wrapped and Apple Music Replay have been a great way for people to see what music they listened to throughout the year.

This is essentially Tesla’s version of that.

With a handful of unique Superchargers already active, Tesla is also building some new ones, like a UFO-inspired location in New Mexico, near Roswell.

Tesla is building a new UFO-inspired Supercharger in the heart of Alien country

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