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NASA to Explore Two Landing Options for Returning Samples from Mars

NASA is pursuing a dual-approach for its Mars Sample Return Program to enhance innovation, reduce costs, and study Martian samples by 2026, aiming to unlock the planet’s mysteries and explore potential life.

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WASHINGTON, Jan. 7, 2025 /PRNewswire/ — To maximize chances of successfully bringing the first Martian rock and sediment samples to Earth for the benefit of humanity, NASA announced Tuesday a new approach to its Mars Sample Return Program. The agency will simultaneously pursue two landing architectures, or strategic plans, during formulation, encouraging competition and innovation, as well as cost and schedule savings.

NASA
This photomontage shows tubes containing samples from Mars, as collected by NASA’s Perseverance Mars rover. The agency’s Mars Sample Return Program plans to bring these samples back to study them in state-of-the-art facilities on Earth. Credit: NASA/JPL-Caltech/MSSS

NASA plans to later select a single path forward for the program, which aims to better understand the mysteries of the universe, and to help determine whether the Red Planet ever hosted life. NASA is expected to confirm the program – and its design – in the second half of 2026.

“Pursuing two potential paths forward will ensure that NASA is able bring these samples back from Mars with significant cost and schedule saving compared to the previous plan,” said NASA Administrator Bill Nelson. “These samples have the potential to change the way we understand Mars, our universe, and – ultimately – ourselves. I’d like to thank the team at NASA and the strategic review team, led by Dr. Maria Zuber, for their work.”

In September 2024, the agency accepted 11 studies from the NASA community and industry on how best to return Martian samples to Earth. A Mars Sample Return Strategic Review team was charged with assessing the studies and then recommending a primary architecture for the campaign, including associated cost and schedule estimates.

“NASA’s rovers are enduring Mars’ harsh environment to collect ground-breaking science samples,” said Nicky Fox, who leads NASA’s Science Mission Directorate. “We want to bring those back as quickly as possible to study them in state-of-the-art facilities. Mars Sample Return will allow scientists to understand the planet’s geological history and the evolution of climate on this barren planet where life may have existed in the past and shed light on the early solar system before life began here on Earth. This will also prepare us to safely send the first human explorers to Mars.”

During formulation, NASA will proceed with exploring and evaluating two distinct means of landing the payload platform on Mars. The first option will leverage previously flown entry, descent, and landing system designs, namely the sky crane method, demonstrated with the Curiosity and Perseverance missions. The second option will capitalize on using new commercial capabilities to deliver the lander payload to the surface of Mars.

For both potential options, the mission’s landed platform will carry a smaller version of the Mars Ascent Vehicle. The platform’s solar panels will be replaced with a radioisotope power system that can provide power and heat through the dust storm season at Mars, allowing for reduced complexity.

The orbiting sample container will hold 30 of the sample tubes containing samples the Perseverance lander has been collecting from the surface of Mars. A redesign of the sample loading system on the lander, which will place the samples into the orbiting sample container, simplifies the backward planetary protection implementation by eliminating the accumulation of dust on the outside of the sample container.

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Both mission options rely on a capture, containment and return system aboard ESA’s (European Space Agency’s) Earth Return Orbiter to capture the orbiting sample container in Mars orbit. ESA is evaluating NASA’s plan.

For more information on NASA’s exploration of Mars, visit:

https://www.nasa.gov/mars

Source: NASA

The science section of our news blog STM Daily News provides readers with captivating and up-to-date information on the latest scientific discoveries, breakthroughs, and innovations across various fields. We offer engaging and accessible content, ensuring that readers with different levels of scientific knowledge can stay informed. Whether it’s exploring advancements in medicine, astronomy, technology, or environmental sciences, our science section strives to shed light on the intriguing world of scientific exploration and its profound impact on our daily lives. From thought-provoking articles to informative interviews with experts in the field, STM Daily News Science offers a harmonious blend of factual reporting, analysis, and exploration, making it a go-to source for science enthusiasts and curious minds alike. https://stmdailynews.com/category/science/


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The Bridge

Harriet Tubman led military raids during the Civil War as well as her better-known slave rescues

Harriet Tubman, renowned for her vital role in the Underground Railroad, also served as a Civil War spy and leader, fighting for freedom and equality despite enduring systemic racism and discrimination.

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Harriet Tubman
A portrait of Harriet Tubman in 1878. Library of Congress/Getty Images

Kate Clifford Larson, Brandeis University

Harriet Tubman was barely 5 feet tall and didn’t have a dime to her name.

What she did have was a deep faith and powerful passion for justice that was fueled by a network of Black and white abolitionists determined to end slavery in America.

“I had reasoned this out in my mind,” Tubman once told an interviewer. “There was one of two things I had a right to, liberty, or death. If I could not have one, I would have the other; for no man should take me alive.”

Though Tubman is most famous for her successes along the Underground Railroad, her activities as a Civil War spy are less well known.

As a biographer of Tubman, I think this is a shame. Her devotion to America and its promise of freedom endured despite suffering decades of enslavement and second class citizenship.

It is only in modern times that her life is receiving the renown it deserves, most notably her likeness appearing on a US$20 bill in 2030. The Harriet Tubman $20 bill will replace the current one featuring a portrait of U.S. President Andrew Jackson.

In another recognition, Tubman was accepted in June 2021 to the United States Army Military Intelligence Corps Hall of Fame at Fort Huachuca, Arizona. She is one of 278 members, 17 of whom are women, honored for their special operations leadership and intelligence work.

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Though traditional accolades escaped Tubman for most of her life, she did achieve an honor usually reserved for white officers on the Civil War battlefield.

After she led a successful raid of a Confederate outpost in South Carolina that saw 750 Black people rescued from slavery, a white commanding officer fetched a pitcher of water for Tubman as she remained seated at a table.

A different education

Believed to have been born in March 1822 in Dorchester County, Maryland, Tubman was named Araminta by her enslaved parents, Rit and Ben Ross.

“Minty” was the fifth of nine Ross children. She was frequently separated from her family by her white enslaver, Edward Brodess, who started leasing her to white neighbors when she was just 6 years old.

At their hands, she endured physical abuse, harsh labor, poor nutrition and intense loneliness.

As I learned during my research into Tubman’s life, her education did not happen in a traditional classroom, but instead was crafted from the dirt. She learned to read the natural world – forests and fields, rivers and marshes, the clouds and stars.

She learned to walk silently across fields and through the woods at night with no lights to guide her. She foraged for food and learned a botanist’s and chemist’s knowledge of edible and poisonous plants – and those most useful for ingredients in medical treatments.

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She could not swim, and that forced her to learn the ways of rivers and streams – their depths, currents and traps.

She studied people, learned their habits, watched their movements – all without being noticed. Most important, she also figured out how to distinguish character. Her survival depended on her ability to remember every detail.

After a brain injury left her with recurring seizures, she was still able to work at jobs often reserved for men. She toiled on the shipping docks and learned the secret communication and transportation networks of Black mariners.

Known as Black Jacks, these men traveled throughout the Chesapeake Bay and the Atlantic seaboard. With them, she studied the night sky and the placement and movement of the constellations.

She used all those skills to navigate on the water and land.

“… and I prayed to God,” she told one friend, “to make me strong and able to fight, and that’s what I’ve always prayed for ever since.”

Tubman was clear on her mission. “I should fight for my liberty,” she told an admirer, “as long as my strength lasted.”

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The Moses of the Underground Railroad

In the fall of 1849, when she was about to be sold away from her family and free husband John Tubman, she fled Maryland to freedom in Philadelphia.

Between 1850 and 1860, she returned to the Eastern Shore of Maryland about 13 times and successfully rescued nearly 70 friends and family members, all of whom were enslaved. It was an extraordinary feat given the perils of the 1850 Slave Fugitive Act, which enabled anyone to capture and return any Black man or woman, regardless of legal status, to slavery.

Those leadership qualities and survival skills earned her the nickname “Moses” because of her work on the Underground Railroad, the interracial network of abolitionists who enabled Black people to escape from slavery in the South to freedom in the North and Canada.

A group of black men and women are posing for a portrait.
Harriet Tubman, far left, poses with her family, friends and neighbors near her barn in Auburn, N.Y., in the mid- to late 1880s. Bettmann/Getty Images

As a result, she attracted influential abolitionists and politicians who were struck by her courage and resolve – men like William Lloyd Garrison, John Brown and Frederick Douglass. Susan B. Anthony, one of the world’s leading activists for women’s equal rights, also knew of Tubman, as did abolitionist Lucretia Mott and women’s rights activist Amy Post.

“I was the conductor of the Underground Railroad for eight years,” Tubman once said. “and I can say what most conductors can’t say; I never ran my train off the track and I never lost a passenger.”

Battlefield soldier

When the Civil War started in the spring of 1861, Tubman put aside her fight against slavery to conduct combat as a soldier and spy for the United States Army. She offered her services to a powerful politician.

Known for his campaign to form the all-Black 54th and 55th regiments, Massachusetts Gov. John Andrew admired Tubman and thought she would be a great intelligence asset for the Union forces.

He arranged for her to go to Beaufort, South Carolina, to work with Army officers in charge of the recently captured Hilton Head District.

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There, she provided nursing care to soldiers and hundreds of newly liberated people who crowded Union camps. Tubman’s skill curing soldiers stricken by a variety of diseases became legendary.

But it was her military service of spying and scouting behind Confederate lines that earned her the highest praise.

She recruited eight men and together they skillfully infiltrated enemy territory. Tubman made contact with local enslaved people who secretly shared their knowledge of Confederate movements and plans.

Wary of white Union soldiers, many local African Americans trusted and respected Tubman.

According to George Garrison, a second lieutenant with the 55th Massachusetts Regiment, Tubman secured “more intelligence from them than anybody else.”

In early June 1863, she became the first woman in U.S. history to command an armed military raid when she guided Col. James Montgomery and his 2nd South Carolina Colored Volunteers Regiment along the Combahee River.

The inside of a room is filled with rubbish and broken furniture.
The ruins of a slave cabin still remain in South Carolina where Harriet Tubman led a raid of Union troops during the Civil War that freed 700 enslaved people. Andrew Lichtenstein/Corbis via Getty Images

While there, they routed Confederate outposts, destroyed stores of cotton, food and weapons – and liberated over 750 enslaved people.

The Union victory was widely celebrated. Newspapers from Boston to Wisconsin reported on the river assault by Montgomery and his Black regiment, noting Tubman’s important role as the “Black she Moses … who led the raid, and under whose inspiration it was originated and conducted.”

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Ten days after the successful attack, radical abolitionist and soldier Francis Jackson Merriam witnessed Maj. Gen. David Hunter, commander of the Hilton Head district, “go and fetch a pitcher of water and stand waiting with it in his hand while a black woman drank, as if he had been one of his own servants.”

In that letter to Gov. Andrew, Merriam added, “that woman was Harriet Tubman.”

Lifelong struggle

Despite earning commendations as a valuable scout and soldier, Tubman still faced the racism and sexism of America after the Civil War.

An elderly Black woman holds her hands as she sits in a chair and poses for a portrait.
Harriet Tubman is seen in this 1890 portrait. MPI/Getty Images

When she sought payment for her service as a spy, the U.S. Congress denied her claim. It paid the eight Black male scouts, but not her.

Unlike the Union officers who knew her, the congressmen did not believe – they could not imagine – that she had served her country like the men under her command, because she was a woman.

Gen. Rufus Saxton wrote that he bore “witness to the value of her services… She was employed in the Hospitals and as a spy [and] made many a raid inside the enemy’s lines displaying remarkable courage, zeal and fidelity.”

Thirty years later, in 1899, Congress awarded her a pension for her service as a Civil War nurse, but not as a soldier spy.

When she died from pneumonia on March 10, 1913, she was believed to have been 91 years old and had been fighting for gender equality and the right to vote as a free Black woman for more than 50 years after her work during the Civil War.

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Surrounded by friends and family, the deeply religious Tubman showed one last sign of leadership, telling them: “I go to prepare a place for you.”

Kate Clifford Larson, Professor of History, Brandeis University

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


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Important Announcement: Scheduled Site Maintenance Tonight

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Photo by Life Of Pix on Pexels.com

We want to keep you in the loop about an important update regarding our website. Tonight, we will be performing scheduled site maintenance to enhance our platform, improve user experience, and implement crucial updates.

What You Can Expect

During this maintenance window, there will be periods when our site may be temporarily inaccessible. We understand that this might cause some inconvenience, and we sincerely apologize for any disruption to your experience on our platform.

As part of this maintenance, please be advised that our affiliate advertisements will also be affected. During times when the site is offline, those advertisements will not be visible. This is a necessary step to ensure everything functions smoothly moving forward.

Why Are We Performing Maintenance?

Regular maintenance is essential for a number of reasons, including:

  • Software Updates: We will be updating our backend systems to improve security and performance.
  • Feature Enhancements: We’re excited to roll out new features based on your feedback to make navigation easier and more intuitive.
  • Bug Fixes: We will address any bugs or issues to provide a seamless experience for you.

Maintenance Schedule

To keep disruption to a minimum, our maintenance will occur during the late evening hours. While we cannot provide an exact timeline, we will work diligently to complete the updates as quickly as possible. We appreciate your understanding if you encounter any downtime.

Stay Connected

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Thank You!

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Stay tuned, and we’ll be back online before you know it! 🌟

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health and wellness

Rural Americans don’t live as long as those in cities − new research

Rural Americans, especially men, face shorter life expectancies compared to urban dwellers due to higher rates of chronic conditions and limited healthcare access. Education disparities significantly contribute to these health inequities, influencing lifestyle choices and economic stability.

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Rural Am,ericans
Part of the problem is that people living in rural areas don’t always have easy access to health care. cstar55/iStock via Getty Images

Elizabeth Currid-Halkett, University of Southern California; Bryan Tysinger, University of Southern California, and Jack Chapel, University of Southern California

Rural Americans – particularly men – are expected to live significantly shorter, less healthy lives than their urban counterparts, according to our research, recently published in the Journal of Rural Health.

We found that a 60-year-old man living in a rural area is expected on average to live two fewer years than an urban man. For women, the rural-urban gap is six months.

A key reason is worse rates among rural people for smoking, obesity and chronic conditions such as high blood pressure and heart disease. These conditions are condemning millions to disability and shortened lives.

What’s more, these same people live in areas where medical care is evaporating. Living in rural areas, with their relatively sparse populations, often means a shortage of doctors, longer travel distances for medical care and inadequate investments in public health, driven partly by declines in economic opportunities.

Our team arrived at these findings by using a simulation called the Future Elderly Model. With that, we were able to simulate the future life course of Americans currently age 60 living in either an urban or rural area.

The model is based on relationships observed in 20 years of data from the Health and Retirement Study, an ongoing survey that follows people from age 51 through the rest of their lives. Specifically, the model showed how long these Americans might live, the expected quality of their future years, and how certain changes in lifestyle would affect the results.

We describe the conditions that drive our results as “diseases of despair,” building off the landmark work of pioneering researchers who coined the now widely used term “deaths of despair.” They documented rising mortality among Americans without a college degree and related these deaths to declines in social and economic prospects.

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The main causes of deaths of despair – drug overdoses, liver disease and suicide – have also been called “diseases of despair.” But the conditions we study, such as heart disease, could similarly be influenced by social and economic prospects. And they can profoundly reduce quality of life.

We also found that if rural education levels were as high as in urban areas, this would eliminate almost half of the rural-urban life-expectancy gap. Our data shows 65% of urban 60-year-olds were educated beyond high school, compared with 53% of rural residents the same age.

One possible reason for the difference is that getting a bachelor’s degree may make a person more able or willing to follow scientific recommendations – and more likely to work out for 150 minutes a week or eat their veggies as their doctor advises them to. https://www.youtube.com/embed/_WzwHJbAGVc?wmode=transparent&start=0 Rural communities are increasingly hampered by their lack of access to health care.

Why it matters

The gap between urban and rural health outcomes has widened over recent decades. Yet the problem goes beyond disparities between urban and rural health: It also splits down some of the party lines and social divides that separate U.S. citizens, such as education and lifestyle.

Scholarship on the decline of rural America suggests that people living outside larger cities are resentful of the economic forces that may have eroded their economic power. The interplay between these forces and the health conditions we study are less appreciated.

Economic circumstances can contribute to health outcomes. For example, increased stress and sedentary lifestyle due to joblessness can contribute to chronic health issues such as cardiovascular disease. Declines in economic prospects due to automation and trade liberalization are linked to increases in mortality.

But health can also have a strong influence on economic outcomes. Hospitalizations cause high medical costs, loss of work and earnings, and increases in bankruptcy. The onset of chronic disease and disability can lead to long-lasting declines in income. Even health events experienced early in childhood can have economic consequences decades later.

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In tandem, these health and economic trends might reinforce each other and help fuel inequality between rural and urban areas that produces a profoundly different quality of life.

What still isn’t known

It should be noted that our results, like many studies, are describing outcomes on average; the rural population is not a monolith. In fact, some of the most physically active and healthy people we know live in rural areas.

Just how much your location affects your health is an ongoing area of research. But as researchers begin to understand more, we can come up with strategies to promote health among all Americans, regardless of where they live.

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

Elizabeth Currid-Halkett, James Irvine Chair in Urban and Regional Planning and Professor of Public Policy, University of Southern California; Bryan Tysinger, Assistant Professor of Health Policy and Management, University of Southern California, and Jack Chapel, Postdoctoral Scholar in Economics, University of Southern California

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

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