Connect with us

News

SpaceX launches two Starlink missions in 24 hours

Starlink 4-15 and 4-13, 23 hours apart. (Richard Angle/SpaceX)

Published

on

Two SpaceX Falcon 9 rockets have completed back-to-back Starlink launches less than 24 hours apart, successfully delivering 106 Starlink satellites to low Earth orbit (LEO).

Originally scheduled just a handful of hours apart, slight delays eventually saw Starlink 4-13 and Starlink 4-15 settle on 6:07 pm EDT, May 13th and 4:40 pm EDT, May 14th, respectively. Entering the final stretch, launch preparations went smoothly and both Falcon 9 rockets ultimately lifted off without a hitch.

Starlink 4-15, May 14th. (Richard Angle)

The series began with Starlink 4-13 on Friday. SpaceX chose Falcon 9 B1063 to support the Starlink launch and the booster did its job well, wrapping up its fifth launch since November 2020 with a rare landing aboard drone ship Of Course I Still Love You (OCISLY). Since SpaceX permanently transferred OCISLY from the East Coast to the West Coast in mid-2021, the drone ship has only supported five booster recoveries. Save for an unusual East Coast Starlink launch in May 2021, Falcon 9 B1061 has also primarily been tasked with supporting SpaceX’s West Coast launch manifest. With only one older pad – Vandenberg Space Force Base’s (VSFB) SLC-4 complex – available to SpaceX, the company’s West Coast Falcon launches are also considerably rarer than its East Coast missions.

SpaceX has also taken to using the pad – which is in an optimal location to launch satellites that orbit Earth’s poles – to launch several batches of Starlink satellites into more ordinary equatorial orbits, essentially augmenting the capabilities of its two Florida launch sites.

Starlink 4-13 and 4-15 were more or less identical, in that regard; both launched 53 Starlink V1.5 satellites into LEO to continue filling out the fourth of five Starlink orbital ‘shells’ that will make up SpaceX’s first licensed constellation. Since SpaceX began Plane 4 (or Group 4) launches in November 2021, the company has now completed 15 missions that carried a total of 860 Starlink V1.5 satellites into orbit. Excluding a solar storm-related fluke that destroyed almost an entire launch worth of satellites, all but 8 remain operational in orbit. According to astronomer Jonathan McDowell’s independent tracking, about 300 Group 4 Starlink satellites have reached operational orbits, while another 500 or so are either raising their orbits or waiting for the right moment to do so.

The original and current planned orbits of SpaceX’s first Starlink constellation. (WCCF Tech)

As of May 2022, the first shell or ‘group’ of SpaceX’s first Starlink constellation has about 1500 operational Starlink satellites of a nominal 1584. If all working Group 4 satellites currently in orbit become operational, SpaceX has another ~770 satellites or 15 launches to go to complete the shell (17 to finish Shell 1 and Shell 4). If SpaceX maintains its current six-month launch cadence of one Starlink mission every ~11 days, SpaceX’s first Starlink constellation could have around 3400 working satellites in orbit and be more than three-quarters complete by the end of 2022.

SpaceX, by all appearances, fully intends to push its vehicles and workforce to the absolute limits in 2022 in a bid to complete as many as 60 orbital launches. To launch Starlink 4-15, for example, SpaceX made an unprecedented decision to debut a brand new Falcon 9 booster on the internal mission, demonstrating just how fully its customers have embraced reusability and how much the company wants to expand its fleet of Falcon 9 boosters as quickly as possible.

Advertisement

Following Starlink 4-13 and 4-15, SpaceX has completed 20 launches in the first 19 weeks of 2022 and has another two launches scheduled in the last two weeks of May.

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.

Advertisement
Comments

News

xAI Colossus pollution concerns in Memphis continue

NAACP & SELC push back against xAI Colossus supercomputer. City tests say air is safe — but activists aren’t convinced.

Published

on

xAI-supercomputer-memphis-environment-pushback
(Credit: xAI)

Politicians in Memphis continue to debate about the pollution concerns arising from the xAI Colossus supercomputer.

The NAACP and the Southern Environmental Law Center (SELC) have already expressed interest in filing a lawsuit against xAI over concerns related to air pollution stemming from its gas-powered turbines. Environmental groups have now raised concerns about water pollutants.

On Tuesday, Memphis released third-party air quality test results from June 13 and 16. The tests were conducted in downtown Memphis, Whitehaven, and Boxtown, two miles from xAI’s site. The city claimed levels of 10 pollutants tested were safe.

However, SELC–which is representing the NAACP in a potential lawsuit against xAI–criticized the omission of a key pollutant called ozone from the air quality tests. SELC also noted that monitors were placed against buildings, contrary to EPA guidance, stating air sensors should be “at least six feet above ground level, rooftop, or other objects and away from obstructions, vegetation, or emissions sources that would interfere with the measurement.”

Local opposition intensified, with State Representative Justin J. Pearson asserting: “I stand firm that nothing matters if you cannot breathe clean air, drink clean water, and plant in clean soil.”

Advertisement

On Wednesday, concerns shifted to the Memphis aquifer, as the Tennessee Department of Environment and Conservation held a virtual meeting on xAI’s wastewater facility.

Activist Pamela Moses criticized xAI. “They are not coming here to uplift or invest in our community. They are here to exploit it. This a distressed and a historically neglected area, and instead of bringing opportunity, Colossal is bringing pollution…secrecy and broken promises,” she said.

xAI’s $80 million Grey Water facility aims to mitigate water concerns. The Colossus Water Recycle Facility, a collaboration between the Tennessee Valley Authority and Nucor Steel, aims to alleviate the strain on the aquifer.

“This project is a game changer in terms of it saving about 4.7 billion gallons of water projected, and about 4.7 billion gallons will remain in the aquifer every year,” said Bobby White of the Greater Memphis Chamber.

As xAI’s Memphis supercomputer continues to be the center of debates, the tension between economic benefits and environmental justice remains unresolved. With ongoing scrutiny and potential legal action, xAI’s efforts to address pollution and water concerns will shape its role in Memphis’ future.

Advertisement
Continue Reading

News

Tesla Robotaxi’s biggest challenge seems to be this one thing

That big bright thing in the sky might be Tesla’s biggest challenge in terms of Robotaxi.

Published

on

Credit: Tesla

Tesla Robotaxi launched just a few days ago to a limited number of riders in Austin, Texas, but its biggest challenge seems to be how the automaker will figure out one thing: the Sun.

Among the company’s unique strategies, its emphasis on using cameras for self-driving is perhaps the most interesting. No other company has adopted the same strategy, as others have relied on cameras with either sensors or LiDAR rigs to accomplish their self-driving deployments.

Tesla, on the other hand, has called LiDAR unnecessary. CEO Elon Musk once called it “a fool’s errand,” stating it was not needed to build an effective self-driving fleet of vehicles.

Musk compared cameras to eyes. Humans don’t need sensors or LiDAR to operate vehicles on the road, so why should cars? This brought up some questions, especially regarding sun glare. Musk said that Tesla would use direct photon counting to see directly into brigt sunlight or even in the darkest conditions at night.

His quote during a recent earnings call was:

“Actually, it does not blind the camera. We use an approach which is direct photon count. When you see a processed image, so the image that goes from the sort of photon counter — the silicon photon counter — that then goes through a digital signal processor or image signal processor, that’s normally what happens. And then the image that you see looks all washed out, because if you point the camera at the sun, the post-processing of the photon counting washes things out.”
So far, this strategy has yielded mixed results. We have seen examples of both:

The Good

We’ve had a handful of people state that they have had no issue using the Robotaxi when it is driving into direct sunlight.

There are plenty of examples:

The Bad

The Verdict

This is obviously a weird case, and it seems that this could be one of the challenges Tesla will face with the deployment of Robotaxi.

While it will get figured out, this is something that could ultimately push back Tesla’s goal of having no safety monitor in the vehicles. However, the instance will be learned and used to improve in the future through its Neural Nets.

The first intervention was captured yesterday, requiring the Tesla safety monitor to stop the vehicle manually on the car’s touchscreen.

Continue Reading

News

Tesla owners take stand as Stockholm insists on blocking FSD tests

Despite the Tesla owners’ efforts, city officials appear unwilling to budge.

Published

on

Credit: Tesla China

Tesla owners in Sweden are taking it upon themselves to lobby for the approval of FSD-style tests in the City of Stockholm. The owners’ efforts come amidst city officials’ continued refusal to allow Tesla to test its autonomous driving system in the capital.

In open letters and social media posts, Tesla owners have urged Stockholm to reconsider its stance, pointing to broader support for FSD trials across Europe. But despite their efforts, city officials appear unwilling to budge, reinforcing the capital’s hardline stance on the Elon Musk-led EV maker.

Public support shows brand loyalty

A group of Swedish Tesla owners recently sent an open letter to Stockholm leaders. Among them is Alexander Kristensen, who has written a letter to officials urging them to allow Tesla to test FSD in the region.

“Members of the Traffic Committee are politically appointed by the Stockholm City Council, whose mandate is determined by the popular vote. Your stance—continuing to block a conditional pilot of FSD— is thus a political decision and fully subject to the electorate’s judgment in the next municipal election.

“When the City prevents tests that could validate and refine the technology locally, it is perceived as hampering life-saving innovation,” the Tesla owners wrote.

Advertisement

The Swedish Transport Administration issued a response, acknowledging the Tesla owners’ feedback. The Transport Administration noted that it could proceed to grant a permit for Tesla to test FSD, but the company would still have to secure approval from local governments where the FSD-style tests will be conducted.

Stockholm remains firm

Despite this, Stockholm doubled down shortly after, stating that Tesla’s FSD software remains prohibited on city roads.

“Thank you for your comments and for taking an interest in traffic issues concerning the City of Stockholm. As previously stated, the City’s assessment of the current application remains unchanged and our position is set out in the opinion,” the City of Stockhom wrote.

In light of the city’s response, some Tesla owners have vowed to campaign against current officials in the next election.

The push for FSD testing comes as Tesla faces ongoing challenges in Sweden, including a labor dispute with unions over collective bargaining agreements. Since late 2023, the conflict has resulted in strikes, blockades, and legal battles, none of which appear close to resolution. Despite regulatory and labor headwinds, Tesla continues to expand in the region, including the recent installation of Superchargers in union-backed areas.

Advertisement
Continue Reading

Trending