News
Russia quietly shelves development of sole SpaceX Falcon 9-competitive rocket
Russian space agency Roscosmos has indefinitely suspended development of the Proton Medium rocket, once expected to help the country compete with the meteoric rise of SpaceX and the growing field of interested entrants in the commercial launch industry.
As Russia makes a greater push toward Angara rockets, it is sidelining development of Proton Medium, a vehicle ILS hoped would compete head on with SpaceX's Falcon 9. https://t.co/BD6AOusalK
— Caleb Henry (@ChenrySpace) August 30, 2018
The (probable) death of a rocket
In an extraordinary feat of double-speak, freshly appointed Roscosmos director general Dmitry Rogozin – likely a primary source of Proton Medium’s paused development – explained that Russia’s national rocket program would likely experience the “financial collapse of [its] enterprise” if it chose to build “both old and new heavy-duty rockets” simultaneously. Rogozin clearly implied that Angara – a Russian rocket that has flown once (successfully) in 2014 and has a commercial demand about as close to near-zero as possible – was the “new” rocket that Roscosmos ought to solely pursue.
Indeed, upon analyzing the public specifications of Angara A5 and Proton Medium, the two rockets have near-identical theoretical performance characteristics, with higher geostationary transfer orbit payload capabilities (5-6 tons) roughly comparable to Falcon 9 in the SpaceX rocket’s drone ship recovery configuration. As a result, it certainly would make very little sense for Russia to fund and build two rockets with nearly indistinguishable utility – Rogozin certainly is correct in that regard.
However, the space agency director is dumbfoundingly off-base in his suggestion that Angara – not Proton Medium or other proposed alternatives – is the way forward to a financially sustainable Roscosmos. As he himself notes, “eternal state support [of launch vehicles] is impossible and inefficient,” seemingly indicating that he believes any viable state-funded rocket must eventually become a serious commercial competitor, a necessity for a launch vehicle if it’s to sustain itself beyond subsidies (i.e. guaranteed government launch contracts).
https://twitter.com/runnymonkey/status/1030356053882544129
The “old” versus the “new”
The Proton family of rockets – past and present – may not have the most reliable track record or a consistent launch cadence, but nearly any rocket on Earth can lay claim to a more storied launch career when placed next to Angara. Despite the fact that the Russian government itself has funded the development and production of Angara rockets, just a single orbital mission has been launched, and only with a mass simulator (dead weight) as its payload. Since that one-off 2014 launch debut, not even the Russian government itself has chosen to fly state satellites on Angara, instead siding with other successful vehicles in the country’s fleet, including Proton Breeze M and Soyuz-2.
This is almost without a doubt because Angara A5 is the most expensive rocket Russia currently operates, reportedly 30-40% more expensive than Proton M, estimated in 2017 by the US Government Accountability Office to cost roughly $65 million per launch. At roughly a third more than that, an Angara A5 launch presumably costs ~$90 million in a best-case scenario, given that the manufacturing apparatus required to construct the rocket has been maintained on a manifest of exactly zero launches since 2014. In fact, the vehicle was estimated by Russia itself to cost roughly $95 to $105 million per launch back in 2015.
https://twitter.com/runnymonkey/status/1032371653668261888
In an interview with SpaceNews in late 2017, the president of the commercial wing of Russia’s space launch program (known as ILS) frankly stated that “[ILS] needs to target something between $65 [million] and $55 million as the price point [for Proton Medium], and the Angara 5 vehicle will not be able to do that.” In the same interview, the ILS president even went so far as to imply that “Proton Medium was being designed as a purely commercial competitor to SpaceX’s Falcon 9.”
While there is a very slim chance that Proton Medium’s development will be revived after Roscosmos’ internal review, it’s far safer to presume that the vehicle is dead, thus killing Russia’s only tenuous hope of fielding a rocket capable of competing with the likes of SpaceX and Blue Origin. While Roscosmos’ goal is to make Angara (an entirely expendable rocket, might I add) more affordable, it anticipates that the rocket would become cost-competitive with Proton no earlier than 2025.
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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:
🚀 Elon says Raptor 4 will make 300 tons of thrust at sea level at roughly the same mass as Raptor 3.
How far Raptor has come:
Raptor 1: 185 tf, 2,080 kg
Raptor 2: 230 tf, 1,630 kg
Raptor 3: 250 tf, 1,525 kg
Raptor 4: 300 tf33 on Super Heavy = ~9,900 tf, nearly 3x Saturn V https://t.co/HQDswZhyvL
— TESLARATI (@Teslarati) October 26, 2026
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.
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 has just received approval for Tesla Full Self-Driving (Supervised)
This is the 10th country in the EU to gain approval:
1. Netherlands — 10 April 2026 (original RDW approval)
2. Lithuania — 20 May 2026
3. Estonia — 29 May 2026
4. Denmark — 9 June 2026
5. Belgium — 10 June 2026
6. Slovenia — 7 September 2026
7. Czechia — 21 September 2026
8. Croatia — 29 September 2026
9. Slovakia — 16 October 2026— TESLARATI (@Teslarati) October 26, 2026
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.
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.
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.
🚨 Tesla has just expanded its Robotaxi geofence in Houston
It looks a lot like a rocket — we all remember the shape in Austin 🤣 https://t.co/cFOPEuiJ4u
— TESLARATI (@Teslarati) October 26, 2026
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.
How SpaceX Is raising Raptor’s sea-level thrust while holding engine mass steady
Tesla Assisted Driving expands to tenth EU country
