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SpaceX's "Christmas tree" is a Raptor engine for the holidays
SpaceX CEO Elon Musk showed off a holiday-themed Raptor engine “Christmas tree” with its very own star on top. Musk noted via a tweet that the company’s Starship propulsion team is “making great progress” building, testing, and refining the Raptor engines that will one day propel the next-generation rocket to Earth orbit and beyond.
On December 13th, Musk revealed that SpaceX is preparing to ship the 17th completed Raptor engine to the company’s McGregor, Texas rocket test and development facilities, the site of several dedicated test stands for the Starship engine. Likely one of the most complex rocket engines ever designed, built, or tested, Raptor relies on an exotic combustion cycle, referring to the specifics of how engines turn their propellant into meaningful thrust.
Raptor uses what is known as full-flow staged combustion (FFSC) and is the first FFSC engine to graduate beyond ground testing and actually fly, thus far having completed two flight tests in July and August 2019 as part of SpaceX’s Starhopper test campaign. In simple terms, the FFSC cycle aims to extract as much energy from a rocket’s propellant as efficiently as possible, resulting in what is theoretically the most efficient possible chemical propulsion from a given fuel and oxidizer combination.
Due to the sheer complexity required to achieve full-flow staged combustion, the engine type is incredibly rare and only two other (once) functional examples exist – one developed by Soviet engineers in the 20th century and the other built, tested, and inexplicably scrapped by NASA in the 2000s. In fact, the Soviet RD-270 engine’s thrust-to-weight ratio is likely second only to SpaceX’s own Merlin 1D engine, an absolutely spectacular achievement for a propulsion bureau operating in the late 1960s.
RD-270 had major development challenges and would likely have taken years of additional hardware-rich (i.e. destructive trial and error) testing to produce an engine actually capable of reliable flight. Before the program was cancelled in 1970, 22 engines were tested and no single RD-270 survived to perform a fourth static fire, a testament to the immense challenge of FFSC engines.
SpaceX appears to have had a much better go of it with Raptor, although many, many engines have definitely been destroyed or irreparably damaged since the full-scale engine’s February 2019 static fire debut. SpaceX CEO Elon Musk says that the 17th completed Raptor engine is almost ready to head to McGregor, Texas to kick off development and acceptance testing.
It remains to be seen when exactly Raptor engines will be mature and reliable enough to perform the 3-10 minute burns needed to send a Starship to orbit, let alone the Moon or Mars, but Musk appears confident that SpaceX is making great progress along those lines.
Per photos and info posted by NASASpaceflight.com earlier today, Raptor engine SN15 is already installed on a recently-reactivated McGregor test stand ahead of its first rocket-related test in almost half a decade.
Formerly used to test Falcon 9 first stages before SpaceX built a new stand for Falcon 9 and Heavy, that tripod stand has been reactivated for the sole purpose of supporting vertical Raptor engine static fire testing, which Musk says will simplify and expedite development by making test conditions much more flight-like. As of now, all subscale and full-scale Raptor engine static fire testing has been performed at horizontal test stands in McGregor, apparently resulting in wear and behavior that would not likely appear if engines were tested vertically.
SpaceX has gone through the same process with its Merlin engine programs, beginning with horizontal testing (far easier and simpler) but ultimately building a number of dedicated vertical test bays to ensure that engine acceptance and development tests can be performed under more flight-like conditions.
According to NASASpaceflight, SpaceX may have already fired up Raptor SN15 on its reactivated tripod test stand earlier this week, kicking off Raptor’s first Starhopper-free vertical static fire testing. It’s now unclear where the twin horizontal Raptor test bays will fit into future engine testing given Musk’s comments. More importantly, every completed Starship and Super Heavy rocket will require several dozen new Raptor engines and every one of those engines will likely need to pass acceptance testing (including static fires) in McGregor before they can be installed on a launch vehicle.
SpaceX’s Falcon 9 rocket already requires 10 engines per new booster and upper stage, a test burden SpaceX has only managed with the help of two Merlin 1D stands and one Merlin Vacuum stand, all vertical. In other words, it’s safe to say that the reactivated tripod stand is likely just the first of several vertical Raptor test stands to come.
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Starlink India launch gains traction with telecom license approval
Starlink just secured its telecom license in India! High-speed satellite internet could go live in 2 months.
Starlink India’s launch cleared a key regulatory hurdle after securing a long-awaited license from the country’s telecom ministry. Starlink’s license approval in India paves the way for commercial operations to begin, marking a significant milestone after a three-year wait.
The Department of Telecommunications granted Starlink a Global Mobile Personal Communication by Satellite (GMPCS) license, enabling it to roll out its high-speed internet service. Local reports hinted that Starlink plans to launch its services within the next two months. Starlink India’s services are expected to be priced at ₹3,000 per month for unlimited data. Starlink service would require a ₹33,000 hardware kit, including a dish and router.
“Starlink is finally ready to enter the Indian market,” sources familiar with the rollout plans confirmed, noting a one-month free trial for new users.
Starlink’s low-Earth orbit satellite network promises low-latency, high-speed internet that is ideal for rural India, border areas, and hilly terrains. With over 7,000 satellites in orbit and millions of global users, Starlink aims to bridge India’s digital divide, especially in areas with limited traditional broadband.
Starlink has forged distribution partnerships with Indian telecom giants Reliance Jio and Bharti Airtel to streamline deployment and retail logistics. However, the company still awaits spectrum allocation and final clearances from India’s space regulator, IN-SPACe, and national security agencies before its full launch, expected before August 2025.
India’s satellite internet market is becoming increasingly competitive, with Starlink joining rivals like OneWeb and Jio Satellite Communications. While Starlink positions itself as a premium offering, its entry has sparked debate among domestic telecom operators over spectrum pricing.
Local reports noted that other players in the industry have raised concerns over the lower regulatory fees proposed for satellite firms compared to terrestrial operators, highlighting tensions in the sector.
Starlink India’s launch represents a transformative step toward expanding internet access in one of the world’s largest markets. Starlink could redefine connectivity for millions in underserved regions by leveraging its advanced satellite technology and strategic partnerships. As the company navigates remaining regulatory steps, its timely rollout could set a new standard for satellite internet in India, intensifying competition and driving innovation in the telecom landscape.
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xAI supercomputer faces pushback from Memphis politicians
Local leaders in Memphis warn Elon Musk’s xAI hub could pollute local communities, despite Tesla Megapacks now stabilizing power.
xAI’s supercomputer in Memphis faces pushback from local leaders and environmental groups over concerns about air pollution despite its promise of economic growth.
xAI’s Memphis facility was touted as the world’s largest supercomputer. It has sparked opposition from the NAACP, Sierra Club, and Mississippi Democratic Party Chairman Cheikh Taylor.
State Rep. Taylor spoke at a Southaven church press conference recently, arguing that the xAI facility in Memphis, Tennessee, would disproportionately harm black residents in north Mississippi.
“In the State of Mississippi, the goal is to separate Republicans and Democrats on race alone. So, if you’re a Democrat in this state, you probably look like me,” Taylor said.
He also criticized prioritizing economic gains over environmental health, asking, “Can you trust Elon Musk to tell the truth?”
Tennessee State Rep. Justin J. Pearson echoed these concerns, linking the opposition to a broader fight against pollution. “The paltry money xAI has dangled in front of our short-sighted leaders is not worth the cost of breathing dirty and–in some cases–deadly air,” Pearson said.
These local leaders and environmental groups are urging local governments and the Environmental Protection Agency to deny xAI’s air permit applications for 45 to 90 methane gas turbines in the Memphis and Southaven areas.
xAI has not directly addressed the criticism but has taken steps to power its Colossus supercomputer sustainably. Last month, the Greater Memphis Chamber announced that Tesla Megapack batteries would stabilize the facility’s power, with a new 150-megawatt electric substation completing its first construction phase.
“The temporary natural gas turbines that were being used to power the Phase I GPUs prior to grid connection are now being demobilized and will be removed from the site over the next two months,” shared the Chamber.
An additional 160+ Megapacks were delivered to xAI’s Memphis facility for the Colossus 2 data center within the same month.
Announced in June 2024, the xAI facility was hailed by Greater Memphis Chamber CEO Ted Townsend as the largest capital investment by a new-to-market company in Memphis history. Despite its economic promise, environmental concerns continue to fuel opposition, highlighting tensions between technological innovation and community health in the Deep South’s emerging AI hub.
Elon Musk
Elon Musk reveals date of Tesla Robotaxi’s first rides open to public
Tesla CEO Elon Musk continues to roll out new details regarding the Robotaxi launch that is expected to happen soon.
Tesla Robotaxi is set to launch in the coming days, but the first rides will be confined to those who receive invitations that the company sends out. However, CEO Elon Musk revealed the date that Tesla is aiming for when anyone in the general public will be able to call for a Robotaxi.
There has been quite a bit of information today about what appears to be an imminent launch of the Robotaxi platform. The first video of a Robotaxi was captured on a public road in Austin today, just one day after Tesla was added to the City of Austin’s list of licensed autonomous vehicle operators.
First Tesla driverless robotaxi spotted in the wild in Austin, TX
In the coming days, it is expected that Tesla will launch the Robotaxi platform in Austin to a select few. For now, Tesla is taking this ultra-conservative approach as it pertains to the rollout, citing safety precautions. It will be the first time Tesla has done this in public and offered it to people outside of the company.
It did launch a small, limited version of it to employees last month in Austin and the San Francisco Bay Area, but there was someone in the driver’s seat. Today’s video only had an occupant in the passenger seat.
People are eager to know: when will they be able to fetch a driverless Tesla Model Y Robotaxi in Austin for themselves? Musk finally answered the long-awaited question with a tentative date of June 22:
🚨 BREAKING: Elon Musk confirms public Robotaxi rides will tentatively begin on June 22
Safety remains the ultimate priority for Tesla with this cautious rollout https://t.co/Mw5kOzA9Sm
— TESLARATI (@Teslarati) June 11, 2025
Musk cited that Tesla’s utmost priority is still safety and not necessarily the speed of rollout. The current plan seems to be to deploy it in a controlled and slow fashion until confidence is at an extremely high level. Musk seems to believe the rollout will go smoothly, as the date comes less than two weeks after the initial launch.
Anyone who has experienced Full Self-Driving for themselves knows what the cars are capable of. However, Tesla, at this point in time, still requires drivers to pay attention and remain ready to take over the wheel in case of an emergency. This will be a major step in the right direction for Tesla as it prepares to launch Robotaxi in Austin and slowly expand to surrounding areas.
Starlink India launch gains traction with telecom license approval
xAI supercomputer faces pushback from Memphis politicians
Elon Musk reveals date of Tesla Robotaxi’s first rides open to public
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