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News

Space News: Mining old data from NASA’s Voyager 2 solves several Uranus mysteries

NASA’s Voyager 2 captured this image of Uranus while flying by the ice giant in 1986. New research using data from the mission shows a solar wind event took place during the flyby, leading to a mystery about the planet’s magnetosphere that now may be solved. Photo by NASA/JPL-Caltech.

NASA’s Voyager 2 flyby of Uranus decades ago shaped scientists’ understanding of the planet but also introduced unexplained oddities. A recent data dive has offered answers.

When NASA’s Voyager 2 spacecraft flew by Uranus in 1986, it provided scientists’ first — and, so far, only — close glimpse of this strange, sideways-rotating outer planet.

Alongside the discovery of new moons and rings, baffling new mysteries confronted scientists. The energized particles around the planet defied their understanding of how magnetic fields work to trap particle radiation, and Uranus earned a reputation as an outlier in our solar system.

Now, new research analyzing the data collected during that flyby 38 years ago has found that the source of that particular mystery is a cosmic coincidence: It turns out that in the days just before Voyager 2’s flyby, the planet had been affected by an unusual kind of space weather that squashed the planet’s magnetic field, dramatically compressing Uranus’ magnetosphere.

“If Voyager 2 had arrived just a few days earlier, it would have observed a completely different magnetosphere at Uranus,” said Jamie Jasinski of NASA’s Jet Propulsion Laboratory in Southern California and lead author of the new work published in Nature Astronomy. “The spacecraft saw Uranus in conditions that only occur about 4% of the time.”

Magnetospheres serve as protective bubbles around planets (including Earth) with magnetic cores and magnetic fields, shielding them from jets of ionized gas — or plasma — that stream out from the Sun in the solar wind. Learning more about how magnetospheres work is important for understanding our own planet, as well as those in seldom-visited corners of our solar system and beyond.

That’s why scientists were eager to study Uranus’ magnetosphere, and what they saw in the Voyager 2 data in 1986 flummoxed them. Inside the planet’s magnetosphere were electron radiation belts with an intensity second only to Jupiter’s notoriously brutal radiation belts. But there was apparently no source of energized particles to feed those active belts; in fact, the rest of Uranus’ magnetosphere was almost devoid of plasma.

The missing plasma also puzzled scientists because they knew that the five major Uranian moons in the magnetic bubble should have produced water ions, as icy moons around other outer planets do. They concluded that the moons must be inert with no ongoing activity.

The first panel of this artist’s concept depicts how Uranus’s magnetosphere — its protective bubble — was behaving before the flyby of NASA’s Voyager 2. The second panel shows an unusual kind of solar weather was happening during the 1986 flyby, giving scientists a skewed view of the magnetosphere. Photo by NASA/JPL-Caltech.

Solving the mystery

So why was no plasma observed, and what was happening to beef up the radiation belts? The new data analysis points to the solar wind. When plasma from the Sun pounded and compressed the magnetosphere, it likely drove plasma out of the system.

The solar wind event also would have briefly intensified the dynamics of the magnetosphere, which would have fed the belts by injecting electrons into them.

The findings could be good news for those five major moons of Uranus: Some of them might be geologically active after all. With an explanation for the temporarily missing plasma, researchers say it’s plausible that the moons actually may have been spewing ions into the surrounding bubble all along.

Planetary scientists are focusing on bolstering their knowledge about the mysterious Uranus system, which the National Academies’ 2023 Planetary Science and Astrobiology Decadal Survey prioritized as a target for a future NASA mission.

JPL’s Linda Spilker was among the Voyager 2 mission scientists glued to the images and other data that flowed in during the Uranus flyby in 1986. She remembers the anticipation and excitement of the event, which changed how scientists thought about the Uranian system.

“The flyby was packed with surprises, and we were searching for an explanation of its unusual behavior. The magnetosphere Voyager 2 measured was only a snapshot in time,” said Spilker, who has returned to the iconic mission to lead its science team as project scientist. “This new work explains some of the apparent contradictions, and it will change our view of Uranus once again.”

Voyager 2, now in interstellar space, is almost 13 billion miles (21 billion kilometers) from Earth.
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Written by: NASA Jet Propulsion Laboratory
Published: 16 November 2024

Lake County among communities to receive grants in response to impacts of 2018 wildfires

LAKE COUNTY, Calif. — Lake County is among five communities hit hardest by the devastating wildfires in 2018 that will receive $40.7 million in new federal aid to support community development and help communities reach full economic recovery after a disaster.

The funding will not only benefit the hundreds of Californians who participate directly in the workplace training and development programs but creates long-term economic and social benefits for the communities.

“Even after the housing and infrastructure are rebuilt, communities hurt by wildfire can continue to suffer from trauma and economic impacts for years to come,” said Gov. Gavin Newsom. “We are grateful to the Biden Administration for its ongoing support to help Californians rebuild their lives and economies. We will keep advocating for our communities and their access to disaster relief and recovery.”

The funding comes from the federal 2018 Community Development Block Grant—Disaster Recovery Workforce Development, known as the CDBG-DR-WD program.

These awards will go to communities in the counties of Butte, Lake, Los Angeles, Shasta and Ventura.

The federal funding will go to programs that provide free job training and supportive services to low- to moderate-income individuals in the community, with the goal of improving job placement opportunities for residents.

Eligible applicants included local jurisdictions, nonprofit organizations, post-secondary education institutions, and local workforce development boards in areas designated by the U.S. Department of Housing and Urban Development.

In Lake County, the Workforce Alliance of the North Bay will receive more than $4.7 million for the Lake Workforce Program to better equip the region for long-term recovery and rebuilding efforts and enhance resilience to future disasters.

Workforce Alliance of the North Bay did not immediately respond to a request from Lake County News for comment about its program plans on Friday.

“In addition to rebuilding housing and infrastructure, fostering economic recovery is critical after a natural disaster,” said HCD Director Gustavo Velasquez. “Following disasters, many communities face a challenge in finding people locally with the skills to rebuild better and with greater resilience. We are proud to partner with HUD to create these career paths for 2018 wildfire survivors and to help these hard-hit communities grow with an eye toward a strong and sustainable future.”

“CDBG-DR provides communities with important resources to help rebuild in the worst of times. With this investment, young people and others building job skills can focus on their futures. HUD is proud to work with the State of California to ensure resilience across their communities,” said HUD Principal Deputy Assistant Secretary for Community Planning and Development Marion McFadden.

In addition to Lake County’s plans, the projects funded are as follows.

Butte County — The town of Paradise will receive nearly $17.9 million to establish the Paradise Resilient Infrastructure and Sustainable Education Center, or Paradise RISE, on the Paradise High School campus to train 500 local LMI residents in the construction trades — including specialized fields such as plumbing and electrical—or as certified nursing assistants.

Los Angeles County — Two organizations, Tradeswomen and Women in Non-Traditional Employment Roles, have been awarded $2 million to provide training and employment opportunities for underserved populations in the construction trades — particularly focusing on women and other marginalized populations.

Shasta County — The city of Redding will receive more than $8.6 million to launch its Workforce Recovery Training Program, providing online, remote, virtual, and in-person training for 200 LMI residents.

Ventura County — The county received $7.5 million to fund workforce training for 215 LMI county residents in healthcare occupations, restoring healthcare infrastructure, creating job opportunities, promoting community well-being, strengthening disaster preparedness, and ultimately building a more resilient healthcare system and community. The county will also acquire a mobile unit to reach out to communities that may have transportation barriers or difficulty accessing traditional job centers, vital for residents in rural areas of Ventura County.
Details
Written by: Lake County News reports
Published: 15 November 2024

New state insurance regulation would increase insurance availability in wildfire-distressed areas

A new state insurance regulation is aiming to bring more insurance coverage to areas of California that have been hard hit by wildland fires and, as a result, have seen customers receiving nonrenewals.

The California Department of Insurance has submitted the final wildfire catastrophe modeling regulation to the Office of Administrative Law, or OAL, for approval.

The regulation, which the agency said is the first of its kind in California’s history, strengthens Prop. 103 by establishing unprecedented coverage commitments from insurance companies, aimed at stabilizing the insurance market and expanding options for homeowners and business owners in high wildfire-risk areas.

The submission follows several months of extensive public input, expert consultations, and multiple public hearings and workshops held by the Insurance Department.

“Consumers want solutions to our state’s insurance crisis. My new regulation will make insurance more available across the state,” said Insurance Commissioner Ricardo Lara. “As California experiences more intense climate impacts, technology will tell us where the risks truly are and accurately price rates that reflect mitigation and hardening investments.”

“I appreciate Commissioner Lara for moving this forward,” Sen. Bill Dodd, D-Napa, said in response to the announcement. “It’s a complex problem and there isn’t a panacea, but this is one part of the equation that has the ability to help. It will be critical that insurance companies are held accountable towards renewing and writing new policies.”

Under Prop. 103, insurance companies are allowed to raise rates on homeowners, businesses and consumers, but are not legally required to offer coverage in wildfire-prone areas.

This new wildfire catastrophe modeling regulation, as part of Commissioner Lara’s comprehensive Sustainable Insurance Strategy, introduces a requirement for insurers to increase their policy offerings in underserved areas as a condition of incorporating catastrophe modeling into ratemaking.

Providing insurers the ability to better assess risk allows them to more accurately price insurance and make coverage more available to homeowners and businesses who live and operate in wildfire-prone areas all the while ensuring that insurance companies commit to increase their writings of these wildfire distressed properties across the state, the Department of Insurance reported.

In addition, over the past several years, California has invested billions of dollars in wildfire risk reduction and, under Commissioner Lara’s leadership, the Department has implemented several programs designed to reward homeowners and businesses for safety improvements, such as home hardening, property mitigation, and other fire-resistant modifications.

These programs are intended to align insurance practices with the state’s overall wildfire mitigation efforts and investments, which must also be incorporated into catastrophe models as part of this regulation.

The Sustainable Insurance Strategy has already led major insurers like Allstate and Farmers to announce plans to resume or expand their coverage offerings in California when its reforms take full effect.

Key highlights of the wildfire catastrophe modeling regulation include:

Expanded public engagement: The Insurance Department held three workshops and hearings in 2024, which were attended by more than 1,000 interested parties, gathering input and receiving hundreds of public comments which helped shape this regulation.

Increased coverage in high-risk areas: Insurance companies must increase the writing of comprehensive policies in wildfire distressed areas equivalent to no less than 85% of their statewide market share, whereas there is no current legal requirement for insurers to commit to providing any coverage in high-risk areas.

Incorporation of wildfire mitigation efforts: Building on Commissioner Lara’s “Safer from Wildfires” initiative — the nation’s first wildfire safety discount program — the regulation requires catastrophe models to account for mitigation efforts by homeowners, businesses, and communities, something not currently possible under existing outdated regulations today.

Enhanced model integrity: The Insurance Department is finalizing the hiring of a model advisor to examine model integrity, and ensure public review and compliance with Prop. 103.

Implementation timeline: Once approved by OAL, the regulation should take effect by year’s end, with the model review process set to begin on January 1, 2025.

In a parallel initiative, Commissioner Lara and Cal Poly Humboldt have established a strategy group to develop the nation’s first public wildfire catastrophe model.

This partnership with California’s research institutions is designed to create an accessible, science-based model for predicting wildfire risks, ultimately supporting fair and accurate insurance rates.

Expected to provide recommendations by April 2025, the group will further support California’s efforts to build safer communities and expand insurance options statewide.

By increasing insurance availability, the Insurance Department’s approach aims to achieve greater affordability and stability within California’s insurance and real estate markets.

The Insurance Department is on track to complete the regulatory reforms under Commissioner Lara’s comprehensive Sustainable Insurance Strategy by the end of 2024 in order to address current climate risks and increase insurance protection for California consumers.

The Insurance Department’s role includes regulating insurers to ensure accountability, confirm that claims are paid, and verify that consumers are not charged beyond what is necessary and fair.

Through the Insurance Department’s rate regulation experts, each and every rate application filed will be thoroughly reviewed to make sure they are compliant with insurance laws, justified and transparent under Prop. 103, and that consumers are protected.

The Office of Administrative Law is now reviewing the regulation for compliance and, once approved, it will become effective by the end of December.
Details
Written by: Lake County News reports
Published: 15 November 2024

Being bullied in high school can make teens less optimistic about the future

 

Bullying that leads to exclusion and damaged relationships can be particularly harmful. HRAUN/E+ via Getty Images

The effects of bullying on teens’ mental health are well-documented. But could bullying also shape their future aspirations?

Our latest research reveals that teens who are bullied in ninth grade become more pessimistic about their educational and career prospects beyond high school. Specifically, being bullied increases teens’ risk for depression, which leaves them feeling hopeless about the future.

As a developmental psychologist who studies adolescent well-being, I set out to better understand the long-term effects of bullying on teens’ expectations for the future. My research team recruited 388 high schoolers who had recently started ninth grade. We asked them to complete surveys every several months for three consecutive years.

Teens who reported being more frequently bullied by peers in ninth grade subsequently reported lower expectations for their future educational and career prospects by 11th grade. That is, bullied teens felt less confident in their ability to achieve their desired level of education, find enjoyable work and make enough money to support themselves after high school. Students who experienced more bullying in ninth grade were likely to see their future expectations drop by approximately eight percentile points, compared with peers who were not bullied. This drop remains significant even after accounting for factors such as race, gender, socioeconomic status and earlier expectations for academic achievement.

Interestingly, one type of bullying appeared to have an especially negative impact. Adolescents who experienced forms of peer victimization that involve exclusion – being deliberately ignored or left out of group activities – or who experienced damage to social relationships were the worst off. But adolescents who were the targets of overt victimization – such as hitting and kicking or threats and direct name-calling – did not report lower future expectations.

Why does bullying that affects teens’ relationships and social reputations dampen teens’ optimism for future success? We found that depression plays a role. Teens who experienced this kind of bullying in the ninth grade showed more depressive symptoms by 10th grade. Having greater depressive symptoms in 10th grade was associated with having lower future expectations a year later. Given that peers become increasingly important in adolescence, bullying that directly damages these relationships appears to be particularly insidious.

Why it matters

Past research shows that teens with negative future expectations are less likely to attend college and secure high-level jobs in adulthood. Our findings suggest that bullying at the beginning of high school may start a cycle of hopelessness and pessimism about later educational and career prospects. Investing in proven strategies to prevent bullying, such as programs that promote bystander intervention and offer targeted supports for victims, has already been shown to improve young people’s health and could also help break this cycle.

What’s next

We plan to conduct additional surveys with the young people who participated in our research as they transition to college and the workforce in the coming years. By doing so, we hope to identify the best ways to intervene to prevent bullying and its effects. Our ultimate goal is to ensure that all adolescents feel confident in their potential to thrive as adults.

The Research Brief is a short take on interesting academic work.The Conversation

Hannah L. Schacter, Assistant Professor of Psychology, Wayne State University

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Details
Written by: Hannah L. Schacter, Wayne State University
Published: 15 November 2024
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