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SpaceX preparing for back-to-back Starlink launches from California and Florida

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4 years ago

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Update: Next Spaceflight reports that SpaceX has delayed Starlink 4-15 to 4:38 pm EDT, May 14th, ending the immediate possibility of a new SpaceX record for time between launches.

After a few days of delays pushed the missions closer together, SpaceX is now preparing to launch two batches of 53 Starlink satellites just eight hours apart – one from Florida and the other from California.

Originally scheduled to launch as early May 10th, which would have tied SpaceX’s Vandenberg Space Force Base (VSFB) SLC-4E launch pad turnaround record, Starlink 4-13 slipped to May 12th within the last few days. 2400 miles (~3900 km) to the east, SpaceX’s Starlink 4-15 mission – preparing to launch from the company’s Cape Canaveral Space Force Station (CCSFS) LC-40 pad – recently found itself in the opposite boat.

On April 22nd, Spaceflight Now reported that Starlink 4-15 was scheduled to launch no earlier than (NET) May 8th. At the time, Starlink 4-13 was also scheduled to launch on the 8th, placing the two Starlink missions just a few hours apart. On April 28th, Spaceflight Now updated its well-sourced launch calendar, revealing that Starlink 4-13 had slipped to May 10th and Starlink 4-15 to May 16th, ending their concurrence. Finally, on May 7th and May 8th, photographer Ben Cooper reported that Starlink 4-15 had moved up to 2:08 am EDT (06:08 UTC), May 13th and FAA documents revealed that Starlink 4-13 had slipped again to 3:29 pm PDT (22:29 UTC), May 12th.

In other words, the missions have again found themselves just a handful of hours apart after weeks of unrelated juggling and delays. Barring additional issues, Starlink 4-13 and Starlink 4-15 are scheduled to launch just 7 hours and 41 minutes apart. Set in late 2021, the shortest time between two Falcon launches is currently 15 hours and 17 minutes. But above all else, the constant back and forth – only to end up with both launches again just hours apart – demonstrates just how agonizing and unforgiving the planning behind every rocket launch schedule truly is.

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Fittingly, Starlink 4-13’s drone ship headed to sea just ~60 hours before the scheduled launch and Starlink 4-15’s drone ship has yet to depart, keeping the launch dates of both missions about as uncertain as they can be without guaranteeing that delays are coming. Both drone ships must be towed about 400 miles downrange at speeds that almost never exceed 8-10 mph, translating to a minimum two-day journey even with zero stops, slowdowns, or detours.

Beyond the record-breaking potential, Starlink 4-13 is an otherwise ordinary mission that will launch another 53 Starlink V1.5 satellites to an ordinary 53.2-degree inclination, which simply means that they’ll end up in the same ‘shell’ as the other satellites in Starlink’s ‘Group 4’ shell. Despite launching from the opposite coast of the US, Starlink 4-15 will be almost identical and is expected to deploy another 53 Starlink V1.5 satellites to the same orbital shell. However, it appears that Starlink 4-15 will have a few highly unusual features.

Instead of performing a hockey stick-like ‘dogleg’ maneuver to avoid overflying any populated islands in the Bahamas, Falcon 9 will directly overfly the country’s largest western island and attempt to land right in the middle of the archipelago, potentially touching down on a drone ship just 5-15 miles away from Nassau and a couple other islands. The fact alone that SpaceX was able to convince both the Bahamas and the US’ FAA to allow it to fly the trajectory shown above is extremely impressive and belies a deep trust in SpaceX’s expertise and Falcon 9’s safety and reliability. At the same time, SpaceX may be taking some degree of risk, as the trajectory’s minuscule margins for error probably mean that Falcon 9’s automatic flight termination system will be programmed to destroy the rocket at the slightest hint of deviation from the planned trajectory.

Adding to the oddity, Starlink 4-15 will be the first in a long line of 45 dedicated Starlink launches to debut a new Falcon 9 booster. According to Next Spaceflight, Falcon 9 B1073 will claim that unusual first, almost entirely flipping the table on the precedent of conservative government customers – still timid about SpaceX reusability – scrambling to secure increasingly rare launch opportunities on new Falcon 9 boosters. Alternatively, it’s possible – but unlikely – that SpaceX implemented significant changes to Falcon 9 B1073 that it wants to verify independently before risking customer payloads.

With any luck, the new rocket will perform flawlessly and give some nearby Bahamians a truly one-of-a-kind experience: the ability to watch a SpaceX Falcon 9 booster land at sea… from the comfort of their own homes.

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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’s northernmost Supercharger in North America opens

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8 hours ago

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December 12, 2025

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Credit: Tesla

Tesla has opened its northernmost Supercharger in Fairbanks, Alaska, with eight V4 stalls located in one of the most frigid cities in the U.S.

Located just 196 miles from the Arctic Circle, Fairbanks’s average temperature for the week was around -12 degrees Fahrenheit. However, there are plenty of Tesla owners in Alaska who have been waiting for more charging options out in public.

There are only 36 total Supercharger stalls in Alaska, despite being the largest state in the U.S.

Eight Superchargers were added to Fairbanks, which will eventually be a 48-stall station. Tesla announced its activation today:

The base price per kWh is $0.43 at the Fairbanks Supercharger. Thanks to its V4 capabilities, it can charge at speeds up to 325 kW.

Despite being the northernmost Supercharger in North America, it is not even in the Top 5 northernmost Superchargers globally, because Alaska is south of Norway. The northernmost Supercharger is in Honningsvåg, Norway. All of the Top 5 are in the Scandanavian country.

Tesla’s Supercharger expansion in 2025 has been impressive, and although it experienced some early-quarter slowdowns due to V3-to-V4 hardware transitions, it has been the company’s strongest year for deployments.

Through the three quarters of 2025, the company has added 7,753 stations and 73,817 stalls across the world, a 16 percent increase in stations and an 18 percent increase in stalls compared to last year.

Tesla is on track to add over 12,000 stalls for the full year, achieving an average of one new stall every hour, an impressive statistic.

Recently, the company wrapped up construction at its Supercharger Oasis in Lost Hills, California, a 168-stall Supercharger that Tesla Solar Panels completely power. It is the largest Supercharger in the world.

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Tesla shocks with latest Robotaxi testing move

Why Tesla has chosen to use a couple of Model S units must have a reason; the company is calculated in its engineering and data collection efforts, so this is definitely more than “we just felt like giving our drivers a change of scenery.”

Published

12 hours ago

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December 11, 2025

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Credit: Sawyer Merritt | X

Tesla Model S vehicles were spotted performing validation testing with LiDAR rigs in California today, a pretty big switch-up compared to what we are used to seeing on the roads.

Tesla utilizes the Model Y crossover for its Robotaxi fleet. It is adequately sized, the most popular vehicle in its lineup, and is suitable for a wide variety of applications. It provides enough luxury for a single rider, but enough room for several passengers, if needed.

However, the testing has seemingly expanded to one of Tesla’s premium flagship offerings, as the Model S was spotted with the validation equipment that is seen entirely with Model Y vehicles. We have written several articles on Robotaxi testing mules being spotted across the United States, but this is a first:

Why Tesla has chosen to use a couple of Model S units must have a reason; the company is calculated in its engineering and data collection efforts, so this is definitely more than “we just felt like giving our drivers a change of scenery.”

It seems to hint that Tesla could add a premium, more luxury offering to its Robotaxi platform eventually. Think about it: Uber has Uber Black, Lyft has Lyft Black. These vehicles and services are associated with a more premium cost as they combine luxury models with more catered transportation options.

Tesla could be testing the waters here, and it could be thinking of adding the Model S to its fleet of ride-hailing vehicles.

Reluctant to remove the Model S from its production plans completely despite its low volume contributions to the overall mission of transitioning the world to sustainable energy, the flagship sedan has always meant something. CEO Elon Musk referred to it, along with its sibling Model X, as continuing on production lines due to “sentimental reasons.”

However, its purpose might have been expanded to justify keeping it around, and why not? It is a cozy, premium offering, and it would be great for those who want a little more luxury and are willing to pay a few extra dollars.

Of course, none of this is even close to confirmed. However, it is reasonable to speculate that the Model S could be a potential addition to the Robotaxi fleet. It’s capable of all the same things the Model Y is, but with more luxuriousness, and it could be the perfect addition to the futuristic fleet.

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Rivian unveils self-driving chip and autonomy plans to compete with Tesla

Rivian, a mainstay in the world of electric vehicle startups, said it plans to roll out an Autonomy+ subscription and one-time purchase program, priced at $49.99 per month and $2,500 up front, respectively, for access to its self-driving suite.

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24 hours ago

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December 11, 2025

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Credit: Rivian

Rivian unveiled its self-driving chip and autonomy plans to compete with Tesla and others at its AI and Autonomy Day on Thursday in Palo Alto, California.

Rivian, a mainstay in the world of electric vehicle startups, said it plans to roll out an Autonomy+ subscription and one-time purchase program, priced at $49.99 per month and $2,500 up front, respectively, for access to its self-driving suite.

CEO RJ Scaringe said it will learn and become more confident and robust as more miles are driven and it gathers more data. This is what Tesla uses through a neural network, as it uses deep learning to improve with every mile traveled.

He said:

“I couldn’t be more excited for the work our teams are driving in autonomy and AI. Our updated hardware platform, which includes our in-house 1600 sparse TOPS inference chip, will enable us to achieve dramatic progress in self-driving to ultimately deliver on our goal of delivering L4. This represents an inflection point for the ownership experience – ultimately being able to give customers their time back when in the car.”

At first, Rivian plans to offer the service to personally-owned vehicles, and not operate as a ride-hailing service. However, ride-sharing is in the plans for the future, he said:

“While our initial focus will be on personally owned vehicles, which today represent a vast majority of the miles to the United States, this also enables us to pursue opportunities in the rideshare space.”

The Hardware

Rivian is not using a vision-only approach as Tesla does, and instead will rely on 11 cameras, five radar sensors, and a single LiDAR that will face forward.

It is also developing a chip in-house, which will be manufactured by TSMC, a supplier of Tesla’s as well. The chip will be known as RAP1 and will be about 50 times as powerful as the chip that is currently in Rivian vehicles. It will also do more than 800 trillion calculations every second.

RAP1 powers the Autonomy Compute Module 3, known as ACM3, which is Rivian’s third-generation autonomy computer.

ACM3 specs include:

  • 1600 sparse INT8 TOPS (Trillion Operations Per Second).
  • The processing power of 5 billion pixels per second.
  • RAP1 features RivLink, a low-latency interconnect technology allowing chips to be connected to multiply processing power, making it inherently extensible.
  • RAP1 is enabled by an in-house developed AI compiler and platform software

As far as LiDAR, Rivian plans to use it in forthcoming R2 cars to enable SAE Level 4 automated driving, which would allow people to sit in the back and, according to the agency’s ratings, “will not require you to take over driving.”

More Details

Rivian said it will also roll out advancements to the second-generation R1 vehicles in the near term with the addition of UHF, or Universal Hands-Free, which will be available on over 3.5 million miles of roadway in the U.S. and Canada.

Rivian will now join the competitive ranks with Tesla, Waymo, Zoox, and others, who are all in the race for autonomy.

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