Sols 4732-4735: I’ll Zap You, My Pretty, and Your Pebble Too

Earth planning date: Friday, Nov. 22, 2024

For more than a year, NASA’s Curiosity rover has been climbing through layers of sulfate-rich rock in Gale Crater, where alternating thick light- and dark-toned bands are visible by satellite. After a successful 24.55-meter drive (about 81 feet), Curiosity traversed across a light-toned band into a dark-toned one, entering a workspace that contains the characteristic features of these dark-toned bands: platy, dark-toned material interbedded with lighter-toned bedrock. The origin of this dark-toned, platy material remains a mystery. To help solve it, the Geology and Mineralogy Theme Group focused the weekend’s science plan on continuing our documentation of the sedimentary textures, structures, and chemistry of this bedrock, aiming to uncover clues about the processes that formed the dark-toned, platy material. My role as Keeper of the Geology Plan meant keeping track of all the geology-related requests, which made for a busy day!

To investigate further, we plan to brush away surface dust from a section of light-toned bedrock and capture detailed images using the Mars Hand Lens Imager (MAHLI). This close-up view will be paired with chemical and mineralogical analysis using the Alpha Particle X-Ray Spectrometer (APXS). Meanwhile, Mastcam will focus on two nearby outcrops nicknamed “Hanging Valley Ridge” 1 and 2, where the dark-toned platy material is visibly layered within the light-toned bedrock. ChemCam will add to the data by zapping both the brushed light-toned area and the dark-toned material to work out their compositions and compare the two.

In addition to studying the sulfate layers, we’re continuing our long-term investigation of Gediz Vallis Ridge, believed to be a remnant of an ancient debris channel that we’ve been investigating for some time. To build on our previous observations, we’ve planned a Mastcam mosaic and a long-distance Remote Micro-Imager (RMI) observation to further document its morphology and sedimentary structures. Interestingly, we’ve also identified a dark-toned pebble in our workspace that could have been transported from Gediz Vallis Ridge. To test this idea, we’ll use ChemCam to zap the pebble to work out its composition and compare it to the dark-toned material in the outcrop.

While Curiosity focuses on the Martian surface, we’re also monitoring the planet’s atmosphere. The Environmental Theme Group is using the rover’s downtime to conduct a series of dust- and cloud-monitoring activities. One highlight of the weekend plan is an approximately 30-minute ChemCam passive sky observation, which will help us study atmospheric conditions in Gale Crater.

As Americans prepare for Thanksgiving here on Earth, the Curiosity team is gearing up for a special holiday “mega plan.” This seven-sol schedule will keep the rover hard at work, ensuring that science and exploration continue while the team enjoys their celebrations. Stay tuned to see what this plan has in store next week!

Written by Amelie Roberts, Ph.D. candidate at Imperial College London

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A Mission at Home and at Work: Caregivers at Johnson Navigate Dual Role With Community Supports

Many team members at NASA’s Johnson Space Center in Houston may recognize Alicia Baker as the talented flutist in the Hispanic Employee Resource Group’s Mariachi Celestial band. Or, they may have worked with Baker in her role as a spacesuit project manager, testing NASA’s prototype spacesuits and preparing Johnson’s test chambers to evaluate vendor spacesuits.

They might be surprised to learn that Baker juggled these responsibilities and more while also caring for her late husband, Chris, as he fought a terminal illness for 16 years.

“It was hard taking care of a loved one with cancer and working full-time,” Baker said. “My husband was also disabled from a brain tumor surgery, so I had to help him with reading, writing, walking, and remembering, while managing the household.”

Baker worked closely with her manager to coordinate schedules and get approval to telework so that she could work around her husband’s medical appointments and procedures. She also took medical leave when her husband entered hospice care in 2020. Baker said her manager’s flexibility “saved her job” and allowed her to continue providing for her family. She was even able to advance from project engineer to test director to project manager during this time period.

Baker is one of the many Johnson employees who are or have been a caregiver for a loved one. These caregivers provide help to a person in need who often has a medical condition or injury that affects their daily functioning. Their needs may be temporary or long-term, and they could be physical, medical, financial, or domestic in nature.

Recognizing the challenging and critical role caregivers play in their families, the Johnson community provides a variety of resources to support team members through the Employee Assistance Program. Additionally, Johnson’s No Boundaries Employee Resource Group (NoBo) supports caregivers through its programs and initiatives.

Baker participates in both the support group and NoBo activities and takes comfort in sharing her and her husband’s story with others. “I would do it all over again,” she said of her caregiver role.

Now she looks forward to future missions to the Moon, when NASA astronauts will conduct spacewalks on the lunar surface while wearing new spacesuits. “Then I can say I helped make that possible!” Throughout all of her experiences, Baker has learned to never give up. “If you have a dream, keep fighting for it,” she said.

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Linda E. Grimm

Technicians Install Gateway’s Fuel Tanks

Technicians guide the equipment that will house Gateway’s xenon and liquid fuel tanks in this photo from July 1, 2024. The tanks are part of Gateway’s Power and Propulsion Element, which will make the lunar space station the most powerful solar electric spacecraft ever flown. Once fully assembled and launched to lunar orbit, the Power and Propulsion Element’s roll-out solar arrays will harness the Sun’s energy to energize xenon gas and produce the thrust to get Gateway to the Moon’s orbit where it will await the arrival of its first crew on the Artemis IV mission.

Image credit: Maxar Space Systems

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Monika Luabeya

Expedition 71 Astronauts to Discuss Mission in NASA Welcome Home Event

Dec. 2, 2024

RELEASE: J24-015

Expedition 71 Astronauts to Discuss Mission in NASA Welcome Home Event

Four NASA astronauts will participate in a welcome home ceremony at Space Center Houston after recently returning from a mission aboard the International Space Station.

NASA astronauts Matthew Dominick, Mike Barratt, Jeanette Epps, and Tracy C. Dyson will share highlights from their mission beginning at 6 p.m. CST Wednesday, Dec. 4, during a free, public event at NASA Johnson Space Center’s official visitor center. The crew will also recognize key contributors to mission success in an awards ceremony following the presentation.

The astronauts will be available at 5 p.m. for media interviews before the event. Media may request an in-person interview no later than 5 p.m. Tuesday, Dec. 3, by emailing Dana Davis at dana.l.davis@nasa.gov.

Expedition 71

NASA’s SpaceX Crew-8 mission launched to the space station in March 2024 as the eighth commercial crew rotation mission. The crew spent 235 days in space, traveled 100 million miles, and completed 3,760 orbits around the Earth, splashing down off the coast of Pensacola, Florida, on Oct. 25, 2024. This was the first spaceflight for Dominick and Epps and the third spaceflight for Barratt, who has logged 447 days in space over the course of his career. The crew also saw the arrival and departure of eight visiting vehicles during their mission.

Dyson flew with an international crew, launching aboard the Soyuz MS-25 in March 2024. The six-month research mission was the third spaceflight of her career, and her second long-duration spaceflight. Dyson’s third spaceflight covered 2,944 orbits of the Earth and a journey of 78 million miles as an Expedition 70/71 flight engineer. She has now logged a total of 373 days in space, including more than 23 hours in four spacewalks. Dyson and her crewmembers landed safely in Kazakhstan on Sept. 24, 2024.

While aboard the station, the Expedition 71 crew contributed to hundreds of technology demonstrations and experiments including the bioprinting of human tissues. These higher quality tissues printed in microgravity could help advance the production of organs and tissues for transplant and improve 3D printing of foods and medicines on future long-duration space missions. The crew also looked at neurological organoids, created with stem cells from patients to study neuroinflammation, a common feature of neurodegenerative conditions such as Parkinson’s disease. The organoids provide a platform to study these diseases and their treatments and could help address how extended spaceflight affects the brain.

Stay current on space station activities by following @space_station and @ISS_Research on X, as well as the station Facebook and Instagram accounts and the space station blog.

-end-

Jaden Jennings
Johnson Space Center, Houston
713-281-0984
jaden.r.jennings@nasa.gov

Dana Davis
Johnson Space Center, Houston
281-244-0933
dana.l.davis@nasa.gov

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Wendy K. Avedisian

You Are Now Arriving at ‘Pico Turquino’

Earth planning date: Monday, Nov. 18, 2024

Perseverance has been continuing its sightseeing tour of the Jezero crater rim, with this week’s travel itinerary including an up-close look at “Pico Turquino.” Here, the team hopes to investigate the history recorded in this approximately 200-meter-long region (about 656 feet) of exposed outcrop. Such rocks may reveal clues of ancient geologic processes including those that predate or are related to the violent impact that formed Jezero crater. Recently, the team has been studying a number of outcropping ridges during the rover’s ascent of the crater rim, with the goal of characterizing the compositional diversity and structure of these exposed rocks.

After paralleling Pico Turquino about 70 meters (about 230 feet) to the south last week, the team planned a close approach over the weekend that positioned the rover at the southwestern extent of the ridge. Prior to the 107-meter drive (about 351 feet) on sol 1332, the team planned two sols of targeted remote sensing with Mastcam-Z and SuperCam to investigate local regolith and conduct long distance imaging of a steep scarp and 20-meter (about 66 feet) diameter crater to the northwest. The successful approach drive on sol 1332 allowed the team to come into Monday’s planning with the focus of assessing outcrop amenable for proximity science and repositioning the rover for upcoming abrasion activities.

Following our abrasion activities at Pico Turquino, the rover will be hitting the road en route to its next science stop at “Witch Hazel Hill.” Orbital views of Witch Hazel Hill suggest the area may contain layered and light-toned bedrock that likely record important information of the planet’s ancient climate. Prior to arriving at Witch Hazel Hill, the rover plans to pass through a high point known as Lookout Hill that will afford the team incredible views looking back into the crater, as well as get a glimpse westward of terrain far beyond Jezero.

Written by Bradley Garczynski, Postdoctoral Scientist at Western Washington University

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