How a Childhood Telescope Launched a NASA Career

How a Childhood Telescope Launched a NASA Career

Christina Zeringue wearing a gray cardigan stands before a silver NASA insignia
Christina Zeringue is the chief safety and mission assurance officer at NASA’s Stennis Space Center. She is responsible for the safety and mission success of all activities, including rocket propulsion testing and operation of the NASA Stennis federal city.
NASA/Danny Nowlin

Christina Zeringue remembers being 10 years old, looking to the sky through her new telescope to view the Moon and planets on Christmas night. It opened her eyes to space and inspired her journey from the backyard to NASA’s Stennis Space Center near Bay St. Louis, Mississippi.

“I became fascinated with astronomy and learning about stars and constellations, the solar system and planetary orbits, solar and lunar eclipses, and challenging myself to find stars and nebula at different distances from Earth,” Zeringue said. “I was able to do and learn so much just from my own yard.”

She became obsessed with following the development and images produced from the Hubble Space Telescope, which launched on a space shuttle that featured three main engines tested at NASA Stennis.

Zeringue desired to learn more about the universe and find a way to be part of the effort to continue exploring. The Kenner, Louisiana, native ultimately made her way to NASA Stennis following graduation from the University of New Orleans.

As the NASA Stennis chief safety and mission assurance officer, Zeringue is responsible for safety and mission success of all site activities. These include both rocket propulsion testing and operation of the NASA Stennis federal city, where NASA and more than 50 federal, state, academic, public, and private aerospace, technology, and research organizations located onsite share in operating costs while pursuing individual missions.

Christina Zeringue is seen standing behind a telescope outdoors
Christina Zeringue enjoys viewing the partial solar eclipse on Oct. 14, 2023, from Slidell, Louisiana.
NASA/Danny Nowlin

“I have a broad range of responsibilities, which allows me to work with many talented people, pushes me to learn and develop new skills, and keeps my work interesting every day,” Zeringue said.

Zeringue’s work has supported NASA’s Artemis campaign to return astronauts to the Moon through her contributions to RS-25 engine testing and Green Run testing of NASA’s SLS (Space Launch System) core stage ahead of the successful launch of Artemis I.

The Pearl River, Louisiana, resident often encounters engineering or safety challenges where there is not a clear answer to the solution.

“We work together to understand new problems, determine the best course of action, and create new processes and ways to handle every challenge,” she said.

In total, Zeringue has worked 28 years at NASA Stennis – 14 as a contractor and 14 with NASA.

As a contractor, Zeringue initially worked as test article engineer for the Space Shuttle Main Engine Program. She followed that by serving as the quality systems manager, responsible for the quality engineering and configuration management of various engine systems, such as the space shuttle main engine, the RS-68 engine or Delta IV vehicles, and the J-2X upper stage engine.

Zeringue transitioned to NASA in 2011, first as a facility systems safety engineer and then as chief of the operations support division within the NASA Stennis Safety and Mission Assurance Directorate. 

Her proudest career moment came early when working on final inspection of a new high pressure fuel turbopump. She noted a piece of contamination lodged behind the turbine shroud, which had been missed in previous inspections. Ultimately, the part was returned for disassembly before its next flight.

“While our post-test inspections can sometimes become routine, that day still stands out to me as a way that I really knew I directly contributed to the safety of our astronauts,” she said.

From the time Zeringue first looked through her new telescope, to her role as NASA Stennis chief safety and mission assurance officer, each moment along the way has contributed to the advice Zeringue shares with anyone considering a career with NASA. “Stay curious, invest in your own development, share your expertise with others, and try something new every day,” she said.

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LaToya Dean

I Am Artemis: Lili Villarreal

I Am Artemis: Lili Villarreal

3 Min Read

I Am Artemis: Lili Villarreal

Liliana Villarreal, Artemis landing and recovery director with Exploration Ground Systems (EGS), stands in front of the Crew Module Test Article (CMTA) at the turn basin in the Launch Complex 39 area at NASA’s Kennedy Space Center.

Listen to this audio excerpt from Liliana Villarreal, Artemis Landing & Recovery Director:

0:00 / 0:00

Lili Villarreal fell in love with space exploration from an early age when she and her family visited the Kennedy Space Center Visitor Complex in Florida. So, it should come as no surprise that when the opportunity came for her to start working on NASA’s Artemis missions to explore the Moon and build the foundation for the first crewed mission to Mars, she jumped at it.  

I was like, ‘Wow, we’re going back to the Moon. I mean, how cool would it be to be at the beginning stages of that?’

Liliana Villareal

Liliana Villareal

Artemis Landing & Recovery Director

She currently serves as the Artemis Landing and Recovery Director, helping retrieve the astronauts and Orion spacecraft after they splash down in the Pacific Ocean following their mission in space.

Originally from Cartagena, Colombia, Villarreal moved to Miami, Florida, when she was 10 years old with the goal of one day entering the aerospace industry. In 2007, her dream came true, and she became a part of the NASA team.

Prior to becoming the landing and recovery director, Villarreal served as the deputy flow director for the Artemis I mission, responsible for the integration, stacking, and testing of the SLS (Space Launch System) rocket and Orion spacecraft inside the Vehicle Assembly Building at the agency’s Kennedy Space Center.

Cliff Lanham, fourth from left, ground operations manager with Exploration Ground Systems (EGS), passes the baton to Charlie Blackwell-Thompson, Artemis I launch director, inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on March 16, 2022. Joining them from left, are Stacey Bagg, Matt Czech, and Liliana Villareal, with EGS. Next to Blackwell-Thomson are Jeremy Graeber, deputy launch director, and Teresa Annulis.
NASA/Glenn Benson

“I kind of came in about a couple of years before we started processing Artemis I,” Villarreal said. “It took a while to get to the good parts of operations where it’s like, ‘Oh my god, we have everything here, and we’re starting to put everything together. And every day is a different day. Every day we have to figure out, ‘OK, what happened? How are we going to solve it?’ That’s the fun part about being an engineer out here.”

Throughout her NASA career, she’s also had the opportunity to work in the operations division for the International Space Station Program.

Every day I work on the Artemis missions, I imagine how the people who worked on Apollo felt because we are where they were back then.

Liliana Villareal

Liliana Villareal

Artemis Landing & Recovery Director

Currently, she and the team are training for Artemis II – the first crewed mission under Artemis to send four astronauts around the Moon and back. Part of the training includes rehearsing the steps and procedures to make sure they’re ready for crewed flights. This includes conducting underway recovery tests where NASA and U.S. Navy teams practice retrieving astronauts from a representative version of Orion at sea and bringing them and the spacecraft back to the ship.

“I think it’s an amazing thing what we’re doing for humanity,” Villarreal said. “It’s going to better humanity, and it’s a steppingstone to eventually us living in other worlds. And I get to be part of that. You get to be part of that. How cool is that?”

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Antonia Jaramillo

Antonia Jaramillo

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Antonia Jaramillo

Sols 4556-4558: It’s All in a Day’s (box)Work

Sols 4556-4558: It’s All in a Day’s (box)Work

2 min read

Sols 4556-4558: It’s All in a Day’s (box)Work

A grayscale photo looking down at the Martian surface, showing very rough terrain in front of the Curiosity rover. Light gray, gravel-covered rocks are in bright sunlight in about half the frame, extending up diagonally toward the upper right corner of the image. A shadow silhouette of the rover covers most of the rest of the image, with its mast head and robotic arm appearing very prominently. Portions of the rover itself are shadowed but visible at the bottom of the image.
NASA’s Mars rover Curiosity acquired this image using its Right Navigation Camera on June 2, 2025 — Sol 4558, or Martian day 4,558 of the Mars Science Laboratory mission — at 12:23:56 UTC.
NASA/JPL-Caltech

Written by Sharon Wilson Purdy, Planetary Geologist at the Smithsonian National Air and Space Museum

Earth planning date: Friday, May 30, 2025

When you are scheduled to participate in Science Operations for the rover’s weekend plan, you know it’s going to be a busy morning! Assembling the activities for Friday through Sunday (Sols 4556 through 4558) was no exception. I participated on this shift as the “keeper of the plan” for the geology and mineralogy theme group where I worked with members of the science and instrument teams to compile a set of observations for the rover to complete over the weekend. The rover continues to drive over a surface of shallow, sometimes sand-filled depressions that are separated by raised ridges — informally known as the “boxwork structures.” On this Friday, we were tasked with assessing the ground in our immediate vicinity to determine if the low-lying bedrock in the hollows was suitable for drilling.

With a focus on packing the plan with remote sensing activities to understand the bedrock around us, we used the ChemCam laser to analyze the chemistry of two bedrock targets, “La Tuna Canyon” and “Cooper Canyon,” that were also documented by Mastcam. ChemCam and Mastcam also teamed up to image an interesting dark ridge nearby named “Encinal Canyon.” Mastcam created stereo mosaics to document the nature of the candidate drill sites that were near the rover, in addition to the “Blue Sky Preserve” stereo mosaic that beautifully captured the nature of the boxwork structures in front of us. The environmental theme group included some of their favorite activities in the plan to monitor the clouds, wind, and the atmosphere.

Curiosity has successfully completed numerous long drives (about 20+ meters, or 66 feet and beyond) in the past several weeks but this weekend the rover got a bit of a reprieve — the rover will drive approximately 7 meters (about 23 feet) to get situated in front of a possible drill site. I’m eagerly looking forward to seeing what unfolds on Monday!  

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Last Updated
Jun 03, 2025

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Station Prepares for Axiom Mission 4, Studies How Body Adapts to Space

Station Prepares for Axiom Mission 4, Studies How Body Adapts to Space

The Axiom Mission 4, or Ax-4, crew will launch aboard a SpaceX Dragon spacecraft to the International Space Station from NASA’s Kennedy Space Center in Florida. From left to right: ESA (European Space Agency) astronaut Sławosz Uznański-Wiśniewski of Poland, former NASA astronaut Peggy Whitson, ISRO (Indian Space Research Organization) astronaut Shubhanshu Shukla, and Tibor Kapu of Hungary.
The Axiom Mission 4 crew will launch aboard a SpaceX Dragon spacecraft to the space station. From left are, Mission Specialist Sławosz Uznański-Wiśniewski of Poland, Commander astronaut Peggy Whitson of the U.S., Pilot Shubhanshu Shukla of India, and Mission Specialist Tibor Kapu of Hungary.
Axiom Space

The Expedition 73 crew is preparing to welcome the arrival of Axiom Mission 4 (Ax-4) and its four astronauts to the International Space Station next week. Station Commander Takuya Onishi of JAXA (Japan Aerospace Exploration Agency) and NASA Flight Engineers Jonny Kim, Anne McClain, and Nichole Ayers joined each other on Tuesday and reviewed the upcoming private astronaut mission. The station quartet called down to mission managers and discussed Ax-4 operations and station readiness.

Ax-4 is targeted to launch from NASA’s Kennedy Space Center at 8:22 a.m. EDT on June 10 aboard a SpaceX Dragon spacecraft. Veteran astronaut Peggy Whitson will command Ax-4 and lead Indian Pilot Shubhanshu Shukla and Mission Specialists Sławosz Uzanański-Wiśniewksi from Poland and Tibor Kapu from Hungary to the orbital outpost. The Ax-4 astronauts will ride inside Dragon for an autonomous docking to the station’s space-facing port on the Harmony module at 12:30 p.m. on June 11.

Earlier on Tuesday, Onishi once again collected his blood, saliva, and urine samples for processing and cold stowage to analyze the specimens for space-caused molecular, metabolic, and microbial changes in crew members. Next, he inspected multi-layer insulation and joints on the Japanese robotic arm’s Small Fine Arm for potential repairs.

Onishi also participated in an exercise study with McClain with the pair taking turns pedaling on the Destiny laboratory module’s exercise cycle. They each wore chest electrodes and breathing gear to measure their aerobic capacity, or the maximum amount of oxygen the body uses during exercise, in microgravity.

McClain later partnered with Ayers and stowed hardware inside the Bigelow Expandable Activity Module, or BEAM. Ayers also assisted Onishi with the robotics inspection work inside the Kibo laboratory module before reconfiguring electronics and networking gear inside Harmony.

NASA Flight Engineer Jonny Kim continued his 48-hour health monitoring session changing out a sensor-packed headband and vest after working out on the advanced resistive exercise device and jogging on the COLBERT treadmill. He took off the first set of biomedical devices so they could hang out to dry then put on the second set of health monitoring garments and performed breathing calibrations and applied Ultrasound Echo gel on the electrodes.

Veteran Roscosmos cosmonaut Sergey Ryzhikov joined Flight Engineer Alexey Zubritskiy and serviced a neutron radiation detector before inspection duties inside the Zvezda service module. Zubritskiy also set up Earth observation hardware photographing ocean and sea-based landmarks across North America and Europe. Flight Engineer Kirill Peskov also pointed a camera outside a space station window and photographed European rivers and glaciers.

Learn more about station activities by following the space station blog, @space_station and @ISS_Research on X, as well as the ISS Facebook and ISS Instagram accounts.

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Mark A. Garcia

America’s First Spacewalk

America’s First Spacewalk

An astronaut in a spacesuit floats almost upside down outside of a spacecraft. Earth's blue water and white clouds are behind the astronaut.
NASA

NASA astronaut Ed White, pilot of the Gemini IV mission, floats in space on June 3, 1965, while performing the first spacewalk by an American. As White floated outside the spacecraft, he used a Hand-Held Maneuvering Unit, informally called a “zip gun.” The device, seen in White’s right hand in this image, expelled pressurized oxygen to provide thrust for controlling his movements outside the capsule.

“You look beautiful, Ed,” remarked fellow crew member astronaut James A. McDivitt, who remained inside the spacecraft, as he began taking pictures of White tumbling around outside his window. “I feel like a million dollars,” White said. “This is the greatest experience. It’s just tremendous.”

Watch video of the first American spacewalk.

Image credit: NASA

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Monika Luabeya