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SpaceX’s first astronaut-proven rocket returns to dry land

Its Falcon 9 emblem filed off and replaced with a NASA meatball, SpaceX has successfully returned the first 'astronaut-proven' Falcon 9 booster to dry land after the rocket's Crew Dragon launch debut. (Richard Angle)

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Three days after becoming the first privately-developed rocket in history to launch humans into orbit, SpaceX’s first astronaut-proven Falcon 9 booster has safely returned to dry land.

Although the sheer importance of SpaceX’s flawless astronaut launch debut and space station arrival can’t be exaggerated, the fact remains that the vast majority of the company’s orbital missions are centered around the affordable launch of satellites and other uncrewed payloads. All of those launches need Falcon boosters, too, and Crew Dragon’s Demo-2 mission has come at a time when SpaceX’s fleet of flightworthy rockets is the smallest it’s been in at least 18 months.

Significantly thinned by two failed Falcon Heavy center core recoveries and the loss of four boosters in 2020 alone (two intentional, two less so), SpaceX’s booster fleet has dropped from as many as ten to as few as two in just 13 months. Thankfully, B1058’s successful May 30th landing and June 2nd return adds a third booster to SpaceX’s immediately-available rocket fleet. On the horizon, two additional unflown boosters are in the late stages of preparation for their separate launch debuts – no earlier than (NET) June 30th and August 30th, respectively. With a little luck, SpaceX’s fleet of flight-proven boosters will soon have grown nearly three-fold in about as many months.

SpaceX’s first astronaut-proven rocket booster – designed and built by the private company – has safely returned to dry land. (Richard Angle)

At the moment, SpaceX’s own Starlink satellite internet constellation is by far the biggest source of demand for SpaceX rockets – particularly the flight-proven boosters that allow the company to perform those launches at an unprecedented cost. Over the last 12 or so months, thanks to the spectacular success of Falcon 9 Block 5 reusability, SpaceX has substantially cut booster production at its Hawthorne, California headquarters, thus far dedicating the last six boosters produced to strict, high-profile missions for NASA and the US military.

In other words, while SpaceX has technically had three unflown Falcon 9 boosters – B1058, B1060, and B1061 – more or less ready for flight for months, their first launches have to be reserved for a select few customers that still have reservations about the company’s flight-proven rockets. With its first reserved mission – Crew Dragon’s orbital astronaut launch debut – now out of the way, gently-used Falcon 9 booster B1058 can thankfully enter the greater SpaceX fleet and begin preparing for its next launch.

Falcon 9 B1058 landed just shy of nine minutes after lifting off with NASA astronauts Bob Behnken and Doug Hurley on May 30th. (SpaceX)
The booster safely returned to Port Canaveral aboard drone ship Of Course I Still Love You (OCISLY) three days later. (SpaceX)
(Richard Angle)

Thanks to the fact that booster B1058’s first flight incurred a relatively gentle atmospheric reentry and landing, it could potentially be turned around for its next launch extremely quickly. With three Starlink launches scheduled in June alone and the first expected to launch as early as 9:25 pm EDT (01:25 UTC), June 3rd, SpaceX may actually have to refurbish B1058 far more quickly than any booster before it. SpaceX currently has two Falcon 9 boosters (B1049 and B1051) available for Starlink launches. B1049 is set to launch this week, while B1051 flew its fourth mission just six weeks ago. Based on SpaceX’s current record of 62 days between launches of the same booster, B1051 could be ready for its fifth mission by late June.

In other words, unless SpaceX brings flight-proven Falcon Heavy side booster B1052 or B1053 out of retirement later this month, the company is going to have to break its booster turnaround record by a huge margin with B1049 or B1058. SpaceX certainly has a funny way of resting on its laurels.

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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 has a Cybercab problem nobody saw coming

Tesla’s Cybercab line now builds robotaxis faster than Tesla can deploy them, Lars Moravy says.

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Tesla’s Cybercab line in Texas can now build the two seat robotaxi faster than the company can put it into service, according to Lars Moravy, Tesla’s Vice President of Vehicle Engineering. “We don’t run every day because the line can run so fast. It’s currently outpacing our deployments,” Moravy said in a new Cybercab deep dive from Munro Live. “So, it’s a bit of a race right now. Who’s going to go faster? Right now the manufacturing line’s ahead.”

Tesla’s official Robotaxi account shared a Cybercab analysis video on X on Monday, calling it a “Cybercab engineering deep dive.” Moravy’s comments go further than what he told analysts on the Q3 earnings call last week, when he said the Cybercab line’s listed capacity of more than 125,000 units a year undersells what it can actually run.

The tour shows where that speed comes from. Tesla’s unboxed process splits the Cybercab into front, rear, side and center modules that are built and tested on their own before they meet on a short final line. That final line has just 25 fully automated stations, which Tesla’s team estimated is a fifth to a tenth of what a Model Y needs. The full line is about 78% automated, the framing line is already at 100%, and the layout uses roughly 50% less floor space per vehicle. The stated goal is “100% automation in 10 second cycle time,” or one finished Cybercab every 10 seconds.

Tesla also deleted the paint shop. Only the side modules are coated, and the exterior panels get their color inside the molding machine. Engineers said the car is designed to run at least 500,000 miles, which matters for a vehicle that will spend most of its day carrying riders.

The battery got the same treatment. The Cybercab uses an 88S6P pack of 4680 cells in a steel enclosure, a first for Tesla, with each module potted separately so a single failed module can be swapped instead of the whole pack. Wireless battery management boards replace a wiring harness, and new contactors are fast enough to drop the pyro fuse entirely. Tesla’s battery director graded the pack an A minus, compared with a D for the Model Y structural pack and a B minus for Cybertruck. Up front, the drive unit runs an 11:1 gear ratio versus roughly 9:1 on most Teslas, since the Cybercab does not need a high top speed.

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The deployment side is now the bottleneck Moravy described. Tesla had more than 50 Cybercabs working the Formula 1 weekend in Austin, and Texas records show 463 Cybercabs registered. Tesla said on its earnings call that Cybercab service will launch in Dallas next month, and Moravy said the company is aiming to get Cybercabs to customers by the end of 2026. Every unit built so far has gone into Tesla’s own fleet since the line moved into volume production in April.

Munro Live also asked when it could get a Cybercab to tear down. Tesla’s answer: “Not yet.”

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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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