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Merlin 1D's kerolox exhaust is a blindingly bright, opaque yellow-orange. (Tom Cross) Merlin 1D's kerolox exhaust is a blindingly bright, opaque yellow-orange. (Tom Cross)

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SpaceX Falcon 9 rocket tests engines for first launch and landing of the new decade

Falcon 9 B1049 lifts off for the first time at SpaceX's LC-40 pad in September 2018. (Teslarati)

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SpaceX has successfully fired up a Falcon 9 rocket for the first time in 2020, setting the company up for the first of potentially dozens of Starlink launches over the next 12 months.

On the afternoon of January 4th, SpaceX loaded Falcon 9 with hundreds of tons of liquid oxygen, refined kerosene (RP-1), nitrogen, and helium and ultimately ignited all nine of the booster’s Merlin 1D engines, briefly producing some 7600 kN (1.7 million lbf) of thrust in a routine test known as a wet dress rehearsal (WDR) and static fire. As is tradition, SpaceX confirmed that the test looked successful just a handful of minutes after it was completed and verified that the rocket is now scheduled to launch 60 new Starlink satellites as early as 9:19 pm ET, January 6th (02:19 UTC, Jan 7).

Set to lift off from its LC-40 Cape Canaveral Air Force Station (CCAFS) launch pad, SpaceX’s first launch of the new year and decade hints at what is expected to follow over the course of 2020. In simple terms, the company’s ambitions have never been higher and anywhere from 36 to 38 orbital launches are scheduled between now and 2021 – some 65% of which will likely be internal Starlink missions.

If SpaceX manages to launch even half as many Starlink missions as it says it wants to this year, the company will be heading into 2021 with an operational internet satellite constellation nearly a thousand spacecraft strong – almost enough to ensure uninterrupted global coverage. Already, if SpaceX’s January 6th launch – known as Starlink V1 L2 (the second launch of v1.0 satellites) – goes as planned, the company will almost certainly become the owner of the world’s largest commercial satellite constellation less than eight months after it began launching its unique flat-packed spacecraft.

By designing and shaping the spacecraft for efficient packing, SpaceX’s can launch in incredible number of Starlink satellites on a single Falcon 9. (SpaceX)

In a classic SpaceX move, the company’s Starlink satellite bus is a radical departure from all other commercial spacecraft, opting for a table-like rectangular shape that is extremely flat. While the rectangular shape – likely chosen for the extreme ease of manufacturing it should allow – significantly decreases packing efficiency, Starlink’s flat design and unique deployment mechanism means that SpaceX can fit an unprecedented 60 satellites (each weighing more than 250 kg or 550 lb) into a single lightly-modified Falcon 9 payload fairing.

Ultimately, SpaceX also design its Starlink satellites to be dramatically more robust than any comparable commercial spacecraft, meaning that they are meant to tolerate the violent acoustic launch environment without foam sound suppression panels that otherwise take up space inside Falcon 9’s fairing. Additionally, they are meant to survive the odd collision during their bizarre deployment, in which Falcon 9’s upper stage spins itself like a fan and releases the entire 60-satellite stack at once. Further, this means that Starlink satellites can be transported from their Washington state factory to Cape Canaveral, Florida far more easily and cheaply than almost any other spacecraft of a similar size and weight.

Falcon 9’s second fourth flight

It’s a mouthful, but SpaceX’s Starlink-2 mission will technically mark Falcon 9’s second fourth flight, meaning that it will be the second time a single Falcon 9 booster launches (and optimally lands) for the fourth time. Thrice-flown Falcon 9 booster B1049 has been assigned to support the launch.

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The fourth completed Falcon 9 Block 5 booster, B1049 debuted on September 10th, 2018 on the Telstar 18V satellite launch, followed by a second flight (Iridium-8) in January 2019 and its third and most recent launch in May 2019. B1049’s most recent mission happened to be the very first dedicated Starlink launch, placing 60 Starlink v0.9 spacecraft in orbit in a sort of massive beta test of SpaceX’s cutting-edge satellite technology and design.

In support of Starlink V1 L1, the first launch of finalized Starlink v1.0 satellites, Falcon 9 booster B1048 became the first SpaceX rocket to successfully launch and land four times in November 2019, safely returning to shore aboard drone ship Of Course I Still Love You (OCISLY) a few days later. With (hopefully) two (and soon three) recovered boosters with four flights each under their belts, SpaceX will have a relative wealth of data it can then use to plot the way forward to fifth flights of boosters and beyond – halfway to the minimum Block 5 design goal of 10 launches apiece.

Teslarati photographer Richard Angle (@RDanglePhoto) will be on-site to capture SpaceX’s first Falcon 9 launch and booster recovery of the 2020s. Stay tuned for more details and photos as the launch nears!

Check out Teslarati’s Marketplace! We offer Tesla accessories, including for the Tesla Cybertruck and Tesla Model 3.

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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