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JPL tries to keep Voyager space probes from disconnecting the world’s longest phone call

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JPL tries to keep Voyager space probes from disconnecting the world’s longest phone call

It’s been 45 years since NASA’s Voyager spacecraft blasted off from Earth, however the twin explorers nonetheless name residence from billions of miles away.

“We do the ‘Howdy, are you OK?’ name as soon as per week,” stated Suzanne Dodd, venture supervisor for the long-running mission on the Jet Propulsion Laboratory in La Cañada Flintridge.

The check-ins give Voyager 1 and Voyager 2 an opportunity to share their actual areas on the opposite aspect of the heliosphere, a distant area of the photo voltaic system whose magnetic discipline shields Earth and the opposite planets from galactic cosmic rays.

It was throughout certainly one of these calls in Could that Voyager 1 despatched a perplexing sign.

Knowledge from the pc that controls its orientation “got here again in jumbled bits, jumbled ones and zeros,” Dodd stated. And it continued to seem like gibberish.

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“It’s just like the verify engine mild turned on,” added Bruce Waggoner, a JPL engineer who oversees the operations of the Voyager missions. “We couldn’t isolate it to a particular space.”

This laptop is vital as a result of it retains Voyager 1’s communication antenna pointed firmly in Earth’s route. Any malfunction or lack of energy would lower off humanity’s longest-distance telephone name perpetually.

This artist’s illustration depicts Voyager 1 coming into interstellar area, which is dominated by plasma thrown off by large stars hundreds of thousands of years in the past.

(NASA / JPL-Caltech)

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Voyager 1 is greater than 14 billion miles from Earth. It launched from Kennedy Area Heart in 1977, arrived at Jupiter in 1979 and reached Saturn in 1980. After which it simply stored going.

By 1998 it had grow to be essentially the most distant man-made object, flying farther from the solar than the Pioneer 10 area probe. It left the heliosphere and entered interstellar area in 2012 (although scientists weren’t in a position to verify this till 2013). Voyager 2 adopted in 2018.

Invoice Nye, chief govt of the Planetary Society, known as the 2 spacecraft the “vanguard of human mind and treasure,” rating them alongside the decoding of the human genome and the formulation of the speculation of normal relativity as premier scientific achievements.

“What’s distinctive concerning the Voyager missions is how a lot they’ve impressed individuals for half a century,” he stated.

Voyager 1 is now so far-off that it takes nearly 22 hours for transmissions from the craft to achieve us — touring on the pace of sunshine.

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They’re price ready for. The dispatches embody beneficial scientific information about interstellar magnetic fields, cosmic rays and plasma waves.

Transmissions from the Voyagers are obtained by the Deep Area Community, a trio of colossal radio antennas in California’s Mojave Desert, Australia and Spain. They’re unfold out throughout the globe to make sure not less than certainly one of them might be aimed toward any level within the sky.

All three websites have a 230-foot antenna constructed particularly to hearken to the Voyagers. The farther they go, the tougher they’re to listen to.

The Voyagers’ radios transmit indicators at a mere 23 watts of energy. By the point these indicators attain Earth, they’re decreased to the faintest of whispers, simply one-billionth of a watt.

The spacecraft are getting weaker too. Yearly their batteries lose as much as 4 watts of energy because of the decay of plutonium-238, the radioisotope that fuels them. (Photo voltaic vitality isn’t an possibility as a result of the solar is so far-off.)

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Survival is a sequence of trade-offs. With a finite supply of vitality, what might be sacrificed? What might be preserved?

A massive antenna is lighted up against the night sky

The 230-foot antenna at NASA’s Goldstone Deep Area Communications Advanced close to Barstow.

(NASA / JPL-Caltech)

From their distant areas, the 2 Voyagers kind the right laboratory — actually the solely laboratory — for finding out the interface between a star and its environment.

“It’s actually intriguing to me to have the ability to exit into that medium and make measurements and perceive what’s happening on the market,” stated Invoice Kurth, a heliophysicist on the College of Iowa who research interstellar plasma waves. “It helps us perceive what the atmosphere round different stars is likely to be like.”

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However it’s not simple. The indicators are so faint that even the 230-foot antennas of the Deep Area Community are too small to listen to them. To seize his plasma wave information, Kurth makes use of them in tandem with three 112-foot antennas, “and that’s simply barely sufficient,” he stated.

Including to the problem is that the community can be juggling communications with dozens of different spacecraft, the Mars rovers and now the James Webb Area Telescope. It communicates with the Voyagers just for a couple of hours at a stretch.

This isn’t optimum because the Voyagers have restricted capability to retailer the measurements they make, forcing them to transmit their information in a steady stream. Data that’s missed might be stuffed in by context, like the way in which a baseball fan who missed a couple of at-bats can inform what occurred primarily based on who’s on the sector, the rating, the variety of outs and the group response.

All conversations with the Voyagers are faint, intermittent and sluggish. If there have been an emergency, Waggoner stated, “we must ship a command, wait two days or extra, after which see what it did.”

So when abnormalities just like the one which began in Could come up, scientists have to be additional alert.

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The primary irregular indicators advised one thing had gone incorrect with the perspective management laptop that orients Voyager 1 in area. However the group knew the pc was truly doing its job — had the antenna been pointed within the incorrect route, the Deep Area Community would have seen a degradation in sign energy.

That’s why Dodd wasn’t too unsettled by this downside. However, sorting it out was nonetheless a excessive precedence.

Maybe the high-energy galactic cosmic rays that Voyager 1 is not protected against have knocked atoms off its semiconductor chips and affected the electronics, Dodd stated. Or perhaps the decades-old computing system is glitching as a result of degradation over time.

After a number of months of investigation, the JPL group recognized the offender this week: Voyager 1’s perspective management system began sending its transmission information by a damaged laptop that garbled the information. The issue was fastened by instructing the spacecraft to return to utilizing the proper laptop.

Why Voyager 1 made the swap within the first place continues to be a thriller, and one price fixing because it suggests one thing else isn’t fairly proper aboard the spacecraft.

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An illustration of a spacecraft against a dark background

An illustration depicting certainly one of NASA’s twin Voyager spacecraft in interstellar area.

(NASA / JPL-Caltech)

Even when this downside seems to be inconsequential, Dodd and her JPL colleagues are conscious of 1 mission-ending downside that’s inevitable — lack of energy. It forces them to play a distant sport of deep-space survival.

“There’s a fixed rigidity between instrument energy and thermal administration methods on Voyager,” Dodd stated.

Voyager 1’s instrument heaters use lots of vitality, so in 2012 scientists began turning a few of them off to protect energy for communications and different vital methods. Fortunately, the devices continued to return information regardless of working in a lot chillier circumstances than they had been designed for.

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Two women in light blue shirts stand next to a man in a dark shirt

Suzanne Dodd, from left, Linda Spilker and Bruce Waggoner are the Voyager management group on the Jet Propulsion Laboratory.

(Myung J. Chun / Los Angeles Occasions)

Over time, mission scientists needed to get extra artistic. They shut down the thrusters that make extraordinarily positive changes to regulate antenna orientation in 2019 and used the extra energy-efficient spacecraft navigation thrusters to maneuver your complete probe as a substitute.

“We’ve got tougher selections going ahead,” Dodd stated. Particular person science devices might have to be turned on and off, working a couple of at a time.

Voyager 2, which is 12 billion miles away, faces the identical battery points. In 2020, a failsafe mechanism triggered by two power-hungry methods unexpectedly working on the similar time shut off all its science devices for a number of days. (They’re working positive now.)

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Dodd is hopeful the spacecraft will hold speaking to us for 5 extra years. “I need to have that large occasion for the fiftieth,” she stated, an anniversary the mission would hit in 2027.

It’ll be a tricky day when the road to the final of the Voyagers goes lifeless.

“We’ll strive all the things we will to determine what’s incorrect,” stated JPL planetary scientist Linda Spilker, the deputy venture scientist for the Voyager mission. “However in some unspecified time in the future, we’ll simply have to comprehend, OK, perhaps one thing actually broke this time.”

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Union presses California’s key bird flu testing lab for records

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Union presses California’s key bird flu testing lab for records

The union representing workers at a UC Davis lab that tests and tracks bird flu infections in livestock has sued the university, demanding that records showing staffing levels and other information about the lab’s operations be released to the public.

Workers in the lab’s small biotechnology department had raised concerns late last year about short staffing and potentially bungled testing procedures as cases of avian flu spread through millions of birds in turkey farms and chicken and egg-laying facilities, as well as through the state’s cattle herds.

The University Professional and Technical Employees-CWA Local 9119 said that it requested records in December 2024 in an attempt to understand whether the lab was able to properly service the state’s agribusiness.

But UC Davis has refused to release records, in violation of California’s public records laws, the union alleged in a lawsuit recently filed in Alameda County Superior Court.

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UC Davis spokesperson Bill Kisliuk declined to comment on the lawsuit’s specific allegations.

“The university looks forward to filing our response in court. We are grateful for the outstanding work of the CAHFS lab staff, including UPTE-represented workers, during the 2024 surge in avian flu testing,” Kisliuk said in an email.

UC Davis has previously denied that workplace issues have left the lab ill-equipped to handle bird flu testing. Kisliuk had said the facility “maintained the supervision, staffing and resources necessary to provide timely and vital health and safety information to those asking us to perform tests.”

According to copies of email correspondence cited in the lawsuit, UC Davis in January denied the union’s request for records regarding short staffing or testing errors, calling the request “unduly burdensome.” It also denied its request for information about farms and other businesses that had samples tested at the lab, citing an exemption to protect from an “invasion of personal privacy.”

Workers at the lab had previously told The Times that they observed lapses in quality assurance procedures, as well as other mistakes in the testing process.

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Amy Fletcher, a UC Davis employee and president of the union’s Davis chapter, said the records would provide a necessary window into how staffing levels could be hurting farms and other businesses that rely on the lab for testing. Fletcher said workers have become afraid to speak about problems at the lab, having been warned by management that the some information related to testing is confidential.

The Davis lab is the only entity in the state with the authority to confirm bird flu cases.

The union, known as UPTE, represents about 20,000 researchers and other technical workers across the University of California system’s 10 campuses.

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Newsom's podcast sidekick: a single-use plastic water bottle

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Newsom's podcast sidekick: a single-use plastic water bottle

Johnny had Ed. Conan had Andy. And Gov. Gavin Newsom? A single-use plastic water bottle.

In most of the YouTube video recordings of Newsom’s new podcast, “This is Gavin Newsom,” a single-use plastic water bottle lurks on a table nearby.

Sometimes, it is accompanied by a single-use coffee cup. Other times, it stands alone.

Typically, such product placement would raise nary an eyebrow. But in recent weeks, environmentalists, waste advocates, lawmakers and others have been battling with the governor and his administration over a landmark single-use plastic law that Newsom signed in 2022, but which he has since worked to defang — reducing the number of packaged single-use products the law was designed to target and potentially opening the door for polluting forms of recycling.

Anti-plastic advocates say it’s an abrupt and disappointing pivot from the governor, who in June 2022, decried plastic pollution and the plague of single-use plastic on the environment.

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“It’s like that whole French Laundry thing all over again,” said one anti-plastic advocate, who didn’t want to be identified for fear of angering the governor. Newsom was infamously caught dining without a mask at the wine country restaurant during the COVID-19 lockdown.

Newsom’s efforts to scale back SB 54, the state’s single-use plastic recycling law, has dismayed environmentalists who have long considered Newsom one of their staunchest allies.

“Our kids deserve a future free of plastic waste and all its dangerous impacts … No more,” Newsom said in 2022, when he signed SB 54. “California won’t tolerate plastic waste that’s filling our waterways and making it harder to breathe. We’re holding polluters responsible and cutting plastics at the source.”

Asked about the presence of the plastic water bottle, Daniel Villaseñor, the governor’s deputy director of communications, had this response:

“Are you really writing a story this baseless or should we highlight this video for your editor?” Villaseñor said via email, attaching a video clip showing this reporter seated near a plastic water bottle at last year’s Los Angeles Times’ Climate Summit. (The bottles were placed near chairs for all the panelists; this particular one was never touched.)

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After this story was first published, the governor’s office said the plastic water bottles seen on the podcast were placed there by staff or production teams and not at Newsom’s request, and that the governor remains committed to seeing SB 54 implemented.

More than a half-dozen environmentalists and waste advocates asked to comment for this story declined to speak on the record, citing concerns including possible retribution from the governor’s office and appearing to look like scolds as negotiations over implementing SB 54 continue.

Dianna Cohen, the co-founder and chief executive of Plastic Pollution Coalition, said that while she wouldn’t comment on the governor and his plastic sidekick, she noted that plastic pollution is an “urgent global crisis” that requires strong policies and regulations.

“Individuals — especially those in the public eye — can help shift culture by modeling these solutions. We must all work to embrace the values we want to see and co-create a healthier world,” she said in a statement.

On Thursday, Newsom dropped a new episode of “This is Gavin Newsom” with independent journalist Aaron Parnas. In the video, there wasn’t a plastic bottle in sight.

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In Southern California, many are skipping healthcare out of fear of ICE operations

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In Southern California, many are skipping healthcare out of fear of ICE operations

Missed childhood vaccinations. Skipped blood sugar checks. Medications abandoned at the pharmacy.

These are among the healthcare disruptions providers have noticed since Immigration and Customs Enforcement operations began in Southern California earlier this month.

Across the region, once-busy parks, shops and businesses have emptied as undocumented residents and their families hole up at home in fear. As rumors of immigration arrests have swirled around clinics and hospitals, many patients are also opting to skip chronic-care management visits as well as routine childhood check-ups.

In response, local federally qualified health centers — institutions that receive federal funds and are required by law to provide primary care regardless of ability to pay — have been scrambling to organize virtual appointments, house calls and pharmacy deliveries to patients who no longer feel safe going out in public.

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“We’re just seeing a very frightening and chaotic environment that’s making it extremely difficult to provide for the healthcare needs of our patients,” said Jim Mangia, president of St. John’s Community Health, which offers medical, dental and mental health care to more than 100,000 low-income patients annually in Southern California.

Prior to the raids, the system’s network of clinics logged about a 9% no-show rate, Mangia said. In recent weeks, more than 30% of patients have canceled or failed to show. In response, the organization has launched a program called Healthcare Without Fear to provide virtual and home visits to patients concerned about the prospect of arrest.

“When we call patients back who missed their appointment and didn’t call in, overwhelmingly, they’re telling us they’re not coming out because of ICE,” said Mangia, who estimates that 25% of the clinic’s patient population is undocumented. “People are missing some pretty substantial healthcare appointments.”

A recent survey of patient no-shows at nonprofit health clinics across Los Angeles County found no universal trends across the 118 members of the Community Clinic Assn. of L.A. County, President Louise McCarthy said. Some clinics have seen a jump in missed appointments, while others have observed no change. The data do not indicate how many patients opted to convert scheduled in-person visits to telehealth so they wouldn’t have to leave home, she noted.

Patients have also expressed concerns that any usage of health services could make them targets. Earlier this month, the Associated Press reported that the U.S. Department of Health and Human Services shared the personal data of Medicaid enrollees with the U.S. Department of Homeland Security, including their immigration status. No specific enforcement actions have been directly linked to the data.

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“The level of uncertainty and anxiety that is happening now is beyond the pale,” McCarthy said, for patients and staff alike.

County-run L.A. General Medical Center issued a statement on Thursday refuting reports that federal authorities had carried out enforcement operations at the downtown trauma center. While no immigration-related arrests have been reported at county health facilities, “the mere threat of immigration enforcement near any medical facility undermines public trust and jeopardizes community health,” the department said in a statement.

Los Angeles County is among the providers working to extend in-home care options such as medication delivery and a nurse advice line for people reluctant to come in person.

“However, not all medical appointments or conditions can be addressed remotely,” a spokesperson said. “We urge anyone in need of care not to delay.”

Providers expressed concern that missing preventative care appointments could lead to emergencies that both threaten patients’ lives and further stress public resources. Preventative care “keeps our community at large healthy and benefits really everyone in Los Angeles,” said a staff member at a group of L.A. area clinics. He asked that his employer not be named for fear of drawing attention to their patient population.

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Neglecting care now, he said, “is going to cost everybody more money in the long run.”

A patient with hypertension who skips blood pressure monitoring appointments now may be more likely to be brought into an emergency room with a heart attack in the future, said Dr. Bukola Olusanya, a medical director at St. John’s.

“If [people] can’t get their medications, they can’t do follow-ups. That means a chronic condition that has been managed and well-controlled is just going to deteriorate,” she said. “We will see patients going to the ER more than they should be, rather than coming to primary care.”

Providers are already seeing that shift. When a health team visited one diabetic patient recently at home, they found her blood sugar levels sky-high, Mangia said. She told the team she’d consumed nothing but tortillas and coffee in the previous five days rather than risk a trip to the grocery store.

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