Tag: ars technica

NASA Is Making Big Changes to Speed Up the Artemis Program

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“This is just not the right pathway forward,” Isaacman said.

A senior NASA official, speaking on background to Ars, noted that the space agency has experienced hydrogen and helium leaks during both the Artemis I and Artemis II prelaunch preparations, and these problems have led to monthslong delays in launch.

“If I recall, the timing between Apollo 7 and 8 was nine weeks,” the official said. “Launching SLS every three and a half years or so is not a recipe for success. Certainly, making each one of them a work of art with some major configuration change is also not helpful in the process, and we’re clearly seeing the results of it, right?”

The goal therefore is to standardize the SLS rocket into a single configuration in order to make the rocket as reliable as possible, and launching as frequently as every 10 months. NASA will fly the SLS vehicle until there are commercial alternatives to launch crews to the moon, perhaps through Artemis V as Congress has mandated, or perhaps even a little longer.

Is Everyone on Board?

The NASA official said all of the agency’s key contractors are on board with the change, and senior leaders in Congress have been briefed on the proposed changes.

The biggest opposition to these proposals would seemingly come from Boeing, which is the prime contractor for the Exploration Upper Stage, a contract worth billions of dollars to develop a more powerful rocket that was due to launch for the first time later this decade. However, in a NASA news release, Boeing appeared to offer at least some support for the revised plans.

“Boeing is a proud partner to the Artemis mission and our team is honored to contribute to NASA’s vision for American space leadership,” said Steve Parker, Boeing Defense, Space & Security president and CEO, in the news release. “The SLS core stage remains the world’s most powerful rocket stage, and the only one that can carry American astronauts directly to the moon and beyond in a single launch. As NASA lays out an accelerated launch schedule, our workforce and supply chain are prepared to meet the increased production needs.”

Solid Reasons for Changing Artemis III

NASA’s new approach to Artemis reflects a return to the philosophy of the Apollo program. During the late 1960s, the space agency flew a series of preparatory crewed missions before the Apollo 11 lunar landing. These included Apollo 7 (a low-Earth-orbit test of the Apollo spacecraft), Apollo 8 (a lunar orbiting mission), Apollo 9 (a low-Earth-orbit rendezvous with the lunar lander), and Apollo 10 (a test of the lunar lander descending to the moon, without touching down).

With its previous Artemis template, NASA skipped the steps taken by Apollo 7, 9, and 10. In the view of many industry officials, this leap from Artemis II—a crewed lunar flyby of the moon testing only the SLS rocket and Orion spacecraft—to Artemis III and a full-on lunar landing was enormous and risky.

Image may contain Adult Person Astronaut Face Head Clothing Coat and Jacket

The Artemis II crew rehearse a walkout from the Neil A. Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center.Photograph: Joe Raedle/Getty Images

Falcon 9 Milestones Vindicate SpaceX’s ‘Dumb’ Approach to Reuse

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As SpaceX’s Starship vehicle gathered all of the attention this week, the company’s workhorse Falcon 9 rocket continued to hit some impressive milestones.

Both occurred during relatively anonymous launches of the company’s Starlink satellites but are nonetheless notable because they underscore the value of first-stage reuse, which SpaceX has pioneered over the past decade.

The first milestone occurred on Wednesday morning with the launch of the Starlink 10-56 mission from Cape Canaveral, Florida. The first stage that launched these satellites, Booster 1096, was making its second launch and successfully landed on the Just Read the Instructions drone ship. Strikingly, this was the 400th time SpaceX has executed a drone ship landing.

Then, less than 24 hours later, another Falcon 9 rocket launched the Starlink 10-11 mission from a nearby launch pad at Kennedy Space Center. This first stage, Booster 1067, subsequently returned and landed on another drone ship, A Shortfall of Gravitas.

This is a special booster, having made its debut in June 2021 and launching a wide variety of missions, including two Crew Dragon vehicles to the International Space Station and some Galileo satellites for the European Union. On Thursday, the rocket made its 30th flight, the first time a Falcon 9 booster has hit that level of experience.

A Decade in the Making

These milestones came about one decade after SpaceX began to have some success with first-stage reuse.

The company first made a controlled entry of the Falcon 9 rocket’s first stage in September 2013, during the first flight of version 1.1 of the vehicle. This proved the viability of the concept of supersonic retropropulsion, which was, until that time, just theoretical.

This involves igniting the rocket’s nine Merlin engines while the vehicle is traveling faster than the speed of sound through the upper atmosphere, with external temperatures exceeding 1,000 degrees Fahrenheit. Due to the blunt force of this reentry, the engines in the outer ring of the rocket wanted to get splayed out, the company’s chief of propulsion at the time, Tom Mueller, told me for the book Reentry. Success on the first try seemed improbable.

He recalled watching this launch from Vandenberg Space Force Base in California and observing reentry as a camera aboard SpaceX founder Elon Musk’s private jet tracked the rocket. The first stage made it all the way down, intact.

“I remember watching the live video and seeing the light of the engine on the ocean,” Mueller said. “And holy shit, it was there. The rocket came down, landed in the ocean, and blew up. That was unreal. It worked the first time. I was like, get the barge ready. Get the landing legs ready. This shit works.”

It would take a good deal more tinkering and experimentation, but by December 2015, SpaceX had landed its first rocket on a pad along the Florida coast. The first drone ship landing followed in April 2016. A little less than a year after this, SpaceX reflew a Falcon 9 stage for the first time.

Silencing the Doubters

Many people in the industry were skeptical about SpaceX’s approach to reuse. In the mid-2010s, both the European and Japanese space agencies were looking to develop their next generation of rockets. In both cases, Europe with the Ariane 6 and Japan with the H3, the space agencies opted for traditional, expendable rockets instead of pushing toward reuse.

As a result, both of these competitors for commercial satellite launches are now about a decade behind SpaceX in terms of launch technology. If the ambitious Starship rocket is successful, that gap could widen further.

Elon Musk Calls Out NASA’s Moon Ambitions: ‘We’re Going Straight to Mars’

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Although SpaceX founder Elon Musk is known for outspokenness and controversial comments on his social media site X, he has been relatively restrained when it comes to US space policy in recent years.

For example, he has rarely criticized NASA or its overall goal to return humans to the moon through the Artemis program. Rather, Musk, who has long preferred Mars as a destination for humans, has more or less been a team player when it comes to the space agency’s lunar-focused plans.

This is understandable from a financial perspective, as SpaceX has contracts worth billions of dollars to not only build a Human Landing System as part of the Artemis program but also to supply food, cargo, and other logistics services to a planned Lunar Gateway in orbit around the moon.

But privately, Musk has been critical of NASA’s plans, suggesting that the Artemis Program has been moving too slowly and is too reliant on contractors who seek cost-plus government contracts and are less interested in delivering results.

Silent on Policy No Longer

During the past 10 days, Musk has begun airing some of these private thoughts publicly. On Christmas Day, for example, Musk wrote on X, “The Artemis architecture is extremely inefficient, as it is a jobs-maximizing program, not a results-maximizing program. Something entirely new is needed.”

Then, on Thursday evening, he added this: “No, we’re going straight to Mars. The moon is a distraction.”

These are definitive statements that directly contradict NASA’s plans to send a series of human missions to the lunar south pole later this decade and establish a sustainable base of operations there with the Artemis program.

It would be one thing if Musk was just expressing his opinion as a private citizen. But since playing a significant part in the election of Donald Trump as the next president of the United States last year, Musk has assumed an important advisory role for the incoming administration. He was also partly responsible for the expected nomination of private astronaut Jared Isaacman to become the next administrator of NASA. Although Musk is not directing US space policy, he certainly has a meaningful say in what happens.

So What Does This Mean for Artemis?

The fate of Artemis is an important question not just for NASA but for the US commercial space industry, the European Space Agency, and other international partners who have aligned with the return of humans to the moon. With Artemis, the United States is in competition with China to establish a meaningful presence on the surface of the moon.

Based upon conversations with people involved in developing space policy for the Trump administration, I can make some educated guesses about how to interpret Musk’s comments. None of these people, for example, would disagree with Musk’s assertion that “the Artemis architecture is extremely inefficient” and that some changes are warranted.

With that said, the Artemis program is probably not going away. After all, it was the first Trump administration that created the program about five years ago. However, it may be less well-remembered that the first Trump White House pushed for more significant changes, including a “major course correction” at NASA.

“I call on NASA to adopt new policies and embrace a new mindset,” then-vice president Mike Pence said in May 2019. “If our current contractors can’t meet this objective, then we’ll find ones that will.” (Speaking of the vice president, it’s unlikely that the National Space Council will be reconstituted under JD Vance).

How NASA Might Change Under Donald Trump

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Although the details remain in flux, the transition team reviewing NASA and its activities has begun to draft potential executive orders for changes to space policy under the Trump Administration.

Sources familiar with the five people on the team, who have spent the last six weeks assessing the space agency and its exploration plans, were careful to note that such teams are advisory in nature. They do not formally set policy nor is their work always indicative of the direction an incoming presidential administration will move toward.

Nevertheless, in trying to set clear goals for NASA and civil space policy, the ideas under consideration reflect the Trump administration’s desire for “big changes” at NASA, both in terms of increasing the effectiveness and velocity of its programs.

Not Business as Usual

The transition team has been grappling with an agency that has a superfluity of field centers—ten spread across the United States, as well as a formal headquarters in Washington, DC—and large, slow-moving programs that cost a lot of money and have been slow to deliver results.

“This will not be business as usual,” one person familiar with this group’s meetings said. The mindset driving their deliberations is a focus on results and speed.

Donald Trump will be inaugurated as president for his second term a little less than a month from now, on January 20. On that day he is expected to sign a number of executive orders on issues that he campaigned on. This could include space policy, but more likely that will wait until later in his presidency.

One source said the space transition team has been working off of ideas that Trump has talked about publicly, including his interest in Mars. For example, during a campaign speech this fall, Trump referenced SpaceX founder Elon Musk, who played a significant role during the campaign both in terms of time and money, and his desire to settle Mars.

“We are leading in space over Russia and China… It’s my plan, I’ll talk to Elon,” Trump said in September. “Elon get those rocket ships going because we want to reach Mars before the end of my term, and we want also to have great military protection in space.”

Ideas Under Consideration

The transition team has been discussing possible elements of an executive order or other policy directives. They include:

  • Establishing the goal of sending humans to the Moon and Mars, by 2028
  • Canceling the costly Space Launch System rocket and possibly the Orion spacecraft
  • Consolidating Goddard Space Flight Center and Ames Research Center at Marshall Space Flight Center in Alabama
  • Retaining a small administration presence in Washington, DC, but otherwise moving headquarters to a field center
  • Rapidly redesigning the Artemis lunar program to make it more efficient

Stealthy Malware Has Infected Thousands of Linux Systems for Years

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Other discussions include: Reddit, Stack Overflow (Spanish), forobeta (Spanish), brainycp (Russian), natnetwork (Indonesian), Proxmox (Deutsch), Camel2243 (Chinese), svrforum (Korean), exabytes, virtualmin, serverfault and many others.

After exploiting a vulnerability or misconfiguration, the exploit code downloads the main payload from a server, which, in most cases, has been hacked by the attacker and converted into a channel for distributing the malware anonymously. An attack that targeted the researchers’ honeypot named the payload httpd. Once executed, the file copies itself from memory to a new location in the /temp directory, runs it, and then terminates the original process and deletes the downloaded binary.

Once moved to the /tmp directory, the file executes under a different name, which mimics the name of a known Linux process. The file hosted on the honeypot was named sh. From there, the file establishes a local command-and-control process and attempts to gain root system rights by exploiting CVE-2021-4043, a privilege-escalation vulnerability that was patched in 2021 in Gpac, a widely used open source multimedia framework.

The malware goes on to copy itself from memory to a handful of other disk locations, once again using names that appear as routine system files. The malware then drops a rootkit, a host of popular Linux utilities that have been modified to serve as rootkits, and the miner. In some cases, the malware also installs software for “proxy-jacking,” the term for surreptitiously routing traffic through the infected machine so the true origin of the data isn’t revealed.

The researchers continued:

As part of its command-and-control operation, the malware opens a Unix socket, creates two directories under the /tmp directory, and stores data there that influences its operation. This data includes host events, locations of the copies of itself, process names, communication logs, tokens, and additional log information. Additionally, the malware uses environment variables to store data that further affects its execution and behavior.

All the binaries are packed, stripped, and encrypted, indicating significant efforts to bypass defense mechanisms and hinder reverse engineering attempts. The malware also uses advanced evasion techniques, such as suspending its activity when it detects a new user in the btmp or utmp files and terminating any competing malware to maintain control over the infected system.

By extrapolating data such as the number of Linux servers connected to the internet across various services and applications, as tracked by services such as Shodan and Censys, the researchers estimate that the number of machines infected by Perfctl is measured in the thousands. They say that the pool of vulnerable machines—meaning those that have yet to install the patch for CVE-2023-33426 or contain a vulnerable misconfiguration—is in the millions. The researchers have yet to measure the amount of cryptocurrency the malicious miners have generated.

People who want to determine if their device has been targeted or infected by Perfctl should look for indicators of compromise included in Thursday’s post. They should also be on the lookout for unusual spikes in CPU usage or sudden system slowdowns, particularly if they occur during idle times. Thursday’s report also provides steps for preventing infections in the first place.

This story originally appeared on Ars Technica.

Each of the Past 12 Months Broke Temperature Records

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June 2023 did not seem like an exceptional month at the time. It was the warmest June in the instrumental temperature record, but monthly records haven’t exactly been unusual in a period where the top 10 warmest years on record all occurred in the past 15 years. And monthly records have often occurred in years that are otherwise unexceptional; at the time, the warmest July on record had occurred in 2019, a year that doesn’t stand out much from the rest of the past decade.

But July 2023 set another monthly record, easily eclipsing 2019’s high temperatures. Then August set yet another monthly record. And so has every single month since—a string of records that propelled 2023 to being the warmest year since tracking started.

On Wednesday, the European Union’s Earth-monitoring service, Copernicus, announced that it has now been a full year where every month has been the warmest version of that month since there’s been enough instruments in place to track global temperatures.

Line graph titled Monthly global surface temperature increase above preindustrial

The history of monthly temperatures shows just how extreme the temperatures have been over the past year.Courtesy of C3S/ECMWF

As you can see from this graph, most years feature a mix of temperatures—some higher than average, some lower. Exceptionally high months tend to cluster, but those clusters also tend to be shorter than a full year.

In the Copernicus data, a similar yearlong streak of records happened once before, in 2015/2016. NASA, which uses slightly different data and methods, doesn’t show a similar streak in that earlier period. NASA hasn’t released its results for May’s temperatures yet—they’re expected in the next few days—but it’s very likely that the results will also show a yearlong streak of records.

Beyond records, the EU is highlighting the fact that the one-year period ending in May was 1.63 degrees Celsius above the average temperatures of the 1850–1900 period, which is used as a baseline for preindustrial temperatures. That’s notable because many countries have ostensibly pledged to try to keep temperatures from exceeding 1.5 degrees Celsius above preindustrial conditions by the end of the century. While it’s likely that temperatures will drop below the target again at some point within the next few years, the new records suggest that we have a very limited amount of time before temperatures persistently exceed it.

Increasing line graph labeled Global surface temperature increase above preindustrial

For the first time on record, temperatures have held steadily in excess of 1.5 degrees Celsius above the preindustrial average.Courtesy of C3S/ECMWF

How a Samsung Washing Machine Chime Triggered a YouTube Copyright Fiasco

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To address this, YouTube did not expedite the dispute process, which still allows up to 30 days for rights holders to respond. Instead, it expedited the appeals process, which happens after a rights holder rejects a disputed claim and arguably is the moment when the YouTuber’s account is most in danger of being terminated.

“Now, the claimant will have 7 days instead of 30 to review the appeal before deciding whether to request a takedown of the video, release the claim, or let it expire,” YouTube wrote in 2022. “We hope shortening the timespan of the appeals process helps you get claims resolved much faster!”

This update would only help YouTubers intent on disputing claims, like Albino was, but not the majority of YouTubers, whom the EFF reported were seemingly so intimidated by disputing Content ID claims that they more commonly just accepted “whatever punishment the system has levied against them.” The EFF summarized the predicament that many YouTubers remain stuck in today:

There is a terrible, circular logic that traps creators on YouTube. They cannot afford to dispute Content ID matches because that could lead to DMCA notices. They cannot afford DMCA notices because those lead to copyright strikes. They cannot afford copyright strikes because that could lead to a loss of their account. They cannot afford to lose their account because they cannot afford to lose access to YouTube’s giant audience. And they cannot afford to lose access to that audience because they cannot count on making money from YouTube’s ads alone, partially because Content ID often diverts advertising money to rights holders when there is Content ID match. Which they cannot afford to dispute.

For Albino, who said he has fought back against many Content ID claims, the Samsung washing machine chime triggering demonetization seemed to be the final straw, breaking his patience with YouTube’s dispute process.

“It’s completely out of hand,” Albino wrote on X.

Katharine Trendacosta, a YouTube researcher and the EFF’s director of policy and advocacy, agreed with Albino, telling Ars that YouTube’s Content ID system has not gotten any better over the years: “It’s worse, and it’s intentionally opaque and made to be incredibly difficult to navigate” for creators.

“I don’t know any YouTube creator who’s happy with the way Content ID works,” Trendacosta told Ars.

But while many people think that YouTube’s system isn’t great, Trendacosta also said that she “can’t think of a way to build the match technology” to improve it, because “machines cannot tell context.” Perhaps if YouTube’s matching technology triggered a human review each time, “that might be tenable,” but “they would have to hire so many more people to do it.”

What YouTube could be doing is updating its policies to make the dispute process less intimidating to content creators, though, Trendacosta told Ars. Right now, the bigger problem for creators, Trendacosta said her research has shown, is not how long it takes for YouTube to work out the dispute process but “the way YouTube phrases the dispute process to discourage you from disputing.”

“The system is so discouraging,” Trendacosta told Ars, with YouTube warning YouTubers that initiating a dispute could result in a copyright strike that terminates their accounts. “What it ends up doing is making them go, ‘You know what, I’ll eat it, whatever.'”

YouTube, which has previously dismissed complaints about the Content ID tool by saying “no system is perfect,” did not respond to Ars’ request for comment on whether any updates to the tool might be coming that might benefit creators. Instead, YouTube’s plan seems to be to commiserate with users who likely can’t afford to leave the platform over their concerns.

“Totally understand your frustration,” Team YouTube told Albino on X.

This story originally appeared on Ars Technica.