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SpaceX Falcon 9 rocket rolls to launch pad earlier than usual for next Starlink mission

Pictured here in January 2020, Falcon 9 booster B1051 is scheduled to attempt its fourth launch no earlier than April 23rd. (Richard Angle)

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A SpaceX Falcon 9 rocket has rolled to the launch pad a full week before the company’s next 60-satellite Starlink launch is scheduled, much earlier than usual compared to all recent Starlink missions.

Thrice-flown Falcon 9 booster B1051 will be supporting the internal SpaceX launch, serving as a partial return-to-flight mission after a Falcon 9 rocket suffered its first in-flight engine failure since 2012 less than a month ago. Recently discussed on Teslarati, prime customer NASA – perhaps just a month away from its first astronaut launch on a SpaceX Crew Dragon and Falcon 9 – has to outwardly worry about the impact of Falcon 9’s March 18th engine failure. Most recently, administrator Jim Bridenstine signaled that SpaceX had already effectively determined the failure mode enough for him to state that it’s “not going to impact our commercial crew launch.”

Likely implying that the engine failure was closely related to the fact that Falcon 9 booster B1048 was on its fifth launch, a first for SpaceX, a successful Starlink launch next week would likely alleviate most remaining customer concerns. Delayed a week from April 16th to 23rd, the rocket’s move to the launch pad indicates that SpaceX may be exerting significantly more caution on this particular Starlink launch, a sign that the company is unsurprisingly prioritizing a fully-successful mission over speed.

Like the late Falcon 9 booster B1048, pictured here in March 2020, B1051 is scheduled to perform a static fire test at Pad 39A within the next few days. (Richard Angle)

Excluding delays, recent SpaceX Starlink launches have seen their Falcon 9 rockets roll out to the launch pad and perform their preflight static fire tests just a few days (or less) before liftoff. To achieve that, SpaceX – for the first time since September 2016 – has begun installing payloads (its own Starlink satellites) on top of Falcon 9 before their static fires. Known as Starlink V1 L6 or Starlink-6 for short, that also remains true for this particular mission – SpaceX’s 6th Starlink launch since November 2019 and 7th launch overall.

Easily visible in Spaceflight Now’s live views of Falcon 9’s roll to the launch pad, the rocket already has a payload fairing – presumably full of 60 Starlink satellites – installed atop its second stage. The fact that SpaceX has rolled the fully-integrated Starlink-6 rocket to the launch pad a full week before its planned liftoff is thus at least a little curious.

SpaceX has already launched four Starlink missions in 2020, averaging roughly one launch every three weeks if Starlink-6 is completed next week. (SpaceX)

The presence of a payload fairing effectively rules out an issue with Starlink satellites as the cause of the delay, while it also makes it much less likely – but not impossible – that any bugs were found in Falcon 9’s first or second stages. Were any such issues discovered, it’s hard to imagine that SpaceX would have chosen to roll the fully-integrated rocket to the launch pad, as any hardware issues would almost certainly require a return to the hangar and some level of disassembly.

As such, the reason for the rocket’s relatively early move to the launch pad is a bit of a mystery. Most likely, as briefly noted, SpaceX is simply taking a more cautious approach to this launch as a result of challenges faced in February and March. The use of Pad 39A – normally dedicated to Falcon Heavy and Crew Dragon launches – also raises the stakes a bit, as a vehicle failure on or around the launch pad would inherently result in major delays to NASA’s critical Commercial Crew Program astronaut launches.

Falcon 9 B1051’s fourth launch carries unique importance due to a recent in-flight engine failure. (SpaceX)

Either way, SpaceX’s Starlink-6 mission is set to be uniquely high-profile. According to launch photographer Ben Cooper, Falcon 9 is scheduled to launch no earlier than 3:16 pm EDT (19:16 UTC) on Thursday, April 23rd. Stay tuned for updates as the rocket approaches its static fire test.

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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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How SpaceX Is raising Raptor’s sea-level thrust while holding engine mass steady

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Credit: SpaceX

SpaceX’s Raptor engine family has steadily increased sea-level thrust while simultaneously reducing mass, turning iterative engineering gains into substantially higher performance for the Super Heavy booster. CEO Elon Musk shed more light on how powerful Raptor 4 will be, and it’s pretty crazy.

Raptor 1 delivered 185 metric tons of thrust at roughly 2,080 kilograms, while Raptor 2 raised that to 230 tons while cutting mass to about 1,630 kilograms. SpaceX data for Raptor 3 lists a target of 280 tons at 1,525 kilograms (with further reductions in associated vehicle hardware), while operational flight ratings have been cited near 250 tons.

This morning, Elon Musk stated that Raptor 4 is expected to reach 300 tons of sea-level thrust at roughly the same mass as Raptor 3. Across these versions, thrust has risen by more than 60 percent from the first engines while engine mass has fallen, producing a sharp improvement in thrust-to-weight ratio. This is a true testament to how great SpaceX engineering has been:

With 33 engines on SuperHeavy, the jump from earlier versions to a 300-ton Raptor 4 would produce roughly 9,900 metric tons of total liftoff thrust, nearly three times the Saturn V’s approximately 3,400 metric tons from its five F-1 engines.

This is not just a larger number on a data sheet, either, as sea-level thrust is the force available the moment the vehicle leaves the pad. This is when it is heaviest and still deep in Earth’s gravity well and dense atmosphere.

Higher levels of sea-level thrust directly improves the initial thrust-to-weight ratio of the full stack. A higher ratio produces faster acceleration off the pad, which shortens the time the rocket has to spend fighting gravity, and gravity losses during the first minute or two of the flight are a major drain on total available delta-v. Every second shaved off of that early climb preserves more propellant energy for reaching orbital velocity or for carrying extra payload.

Because Super Heavy’s engine count is constrained by vehicle diameter and packing density, increasing thrust per engine is the most straightforward way to raise total liftoff performance without redesigning the booster structure or design.

The same-mass target for Raptor 4 is equally important. Holding engine mass roughly constant while raising thrust improves the engine’s own thrust-to-weight ratio and reduces the structural and propellant mass fraction that must be carried solely to support the engines.

Earlier Raptor iterations also simplified or eliminated extensive vehicle-side hardware such as heat shields. These gains compound: more force for less installed mass leaves additional capacity for propellant, payload, or operational margins such as engine-out capability.

For Starship’s architecture, the practical effects are large. Greater liftoff thrust supports heavier vehicles, larger propellant loads, and higher payloads to low Earth orbit, figures SpaceX has targeted in the 100-plus-ton reusable range. That capacity underpins orbital refueling, lunar missions, and eventual Mars cargo and crew flights.

Continued growth in sea-level thrust therefore tightens the gap between theoretical rocket performance and the high flight rates and reusability needed to make large-scale space transport practical.

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Tesla Assisted Driving expands to tenth EU country

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Tesla has expanded its Tesla Assisted Driving (TAD) suite to its tenth European country, as Latvia joined a growing list of European Union member states authorizing the company’s advanced driver assistance technology.

Tesla Europe announced this morning that the system is now approved in Latvia, with a software rollout to begin soon.

The approval and rollout follow recognition of a provisional European type approval originally granted by the Netherlands’ RDW authority on April 10.

Latvia’s Road Traffic Safety Directorate (CSDD) evaluated the Dutch documentation, coordinated with the other national authorities, and reviewed updates from Tesla. These included tightened limits on speed offsets, automatic resets of any manual speed adjustments after each trip, and stronger driver monitoring.

In Europe, the feature is marketed as Tesla Assisted Driving after a recent rule change that labeled the name “Full Self-Driving” as misleading.

Tesla starts showing how FSD will change lives in Europe

The system remains an SAE Level 2 driver assistance tool, not unsupervised autonomy. It can control speed, steering, braking, lane changes, and intersections while following a navigation route. Drivers need not keep their hands on the wheel at all times, yet they must continuously monitor the road and be prepared to intervene immediately.

The sequence of EU recognitions began with the Netherlands in April and continued through Lithuania, Estonia, Denmark, Belgium, Slovenia, Czechia, Croatia, and Slovakia. Most have relied on mutual recognition of the single Dutch provisional approval rather than independent national testing.

These national clearances do not yet constitute bloc-wide authorization. An EU-wide decision requires a qualified majority in the Technical Committee on Motor Vehicles: at least 15 of 27 member states representing 65 percent of the EU population. Larger markets, like Germany, France, and Italy, remain under review, and a vote is expected this December.

However, for Latvian Tesla owners with compatible vehicles and software, the imminent rollout expands access to the supervised system while underscoring that attentive human oversight remains essential.

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Tesla expands Robotaxi geofence in Houston with an ode to SpaceX merger

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Tesla expanded its Robotaxi geofence in Houston, Texas, today, enlarging the service area and drawing a new rocket-shaped boundary across the city’s northwestern and central parts.

Although CEO Elon Musk said it was just a coincidence, the expansion seems to be an ode to SpaceX and its potential merger with Tesla.

The official Tesla Robotaxi account announced the change with the lines “Houston, we have liftoff” and “Bigger service area now live,” pairing them with a map overlay.

The prior white geofence, roughly 25 square miles covering Jersey Village, Harvest Bend, and the Willowbrook corridor along U.S. 290 and State Highway 249, now sits inside a larger blue zone that stretches southeast toward Bellair and closer to central Houston.

Houston’s Robotaxi service launched on April 18, 2026, the same day as Dallas, as Tesla’s first unsupervised public expansion beyond Austin. From the start, the vehicles were Model Ys running without anyone in the front seats, booked through the dedicated Tesla Robotaxi app and open to the public inside the geofence.

Trackers measured the initial zone at about 25 square miles; by late September it had not grown substantially. Community and registry data indicated a modest local fleet of unsupervised Model Ys, while dozens to nearly 200 Cybercabs, the purpose-built, steering-wheel-free two-seaters, have been spotted staging and testing in Houston lots, though public Cybercab rides remain limited to Austin for now.

Across the broader Robotaxi program, Tesla began public Robotaxi rides in Austin in June 2025, as a small geofence and vehicles with safety monitors became available for a ride-hailing service. Later on, Tesla removed the monitors and steadily expanded the service area until it covered most of the Austin metro area.

Unsupervised Robotaxi services now run in six cities: Austin, Dallas, Houston, Miami, Orlando, and Tampa. Cumulative driverless miles reported by the company have reached several million. The Cybercab entered public service in Austin in early September 2026 and has scaled rapidly there. The company has also said that Dallas is next for Cybercab rides in November, with further cities and 24/7 hours targeted by year-end, plus fleet-operator sales of the vehicle.

Waymo also operates a fully driverless service in Houston, which has been open to the public since August of this year.

The Houston expansion continues Tesla’s pattern of starting with tightly controlled validation zones before widening coverage as real-world data accumulates, while the rocket motif on the map underscores the company’s habit of injecting visual flair into its autonomy rollout.

Riders inside the new boundary can request unsupervised Model Y trips in the Robotaxi app; exact operating hours and further Cybercab availability remain subject to app updates and company statements.

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