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By NASA
The telescope and instruments for NASA’s Nancy Grace Roman Space Telescope were recently integrated together on the observatory’s instrument carrier at the agency’s Goddard Space Flight Center in Greenbelt, Md. Next, the entire system will be joined to the Roman spacecraft. NASA/Chris Gunn NASA’s Nancy Grace Roman Space Telescope team has successfully integrated the mission’s telescope and two instruments onto the instrument carrier, marking the completion of the Roman payload. Now the team at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, will begin joining the payload to the spacecraft.
“We’re in the middle of an exciting stage of mission preparation,” said Jody Dawson, a Roman systems engineer at NASA Goddard. “All the components are now here at Goddard, and they’re coming together in quick succession. We expect to integrate the telescope and instruments with the spacecraft before the year is up.”
Engineers first integrated the Coronagraph Instrument, a technology demonstration designed to image exoplanets — worlds outside our solar system — by using a complex suite of masks and active mirrors to obscure the glare of the planets’ host stars.
Then the team integrated the Optical Telescope Assembly, which includes a 7.9-foot (2.4-meter) primary mirror, nine additional mirrors, and their supporting structures and electronics. The telescope will focus cosmic light and send it to Roman’s instruments, revealing billions of objects strewn throughout space and time. Roman will be the most stable large telescope ever built, at least 10 times more so than NASA’s James Webb Space Telescope and 100 times more than the agency’s Hubble Space Telescope. This will allow scientists to make measurements at levels of precision that can answer important questions about dark energy, dark matter, and worlds beyond our solar system.
Technicians install the primary instrument for NASA’s Nancy Grace Roman Space Telescope, called the Wide Field Instrument (at left), in the biggest clean room at the agency’s Goddard Space Flight Center in Greenbelt, Md. This marked the final step to complete the Roman payload, which also includes a Coronagraph instrument and the Optical Telescope Assembly.NASA/Chris Gunn With those components in place, the team then added Roman’s primary instrument. Called the Wide Field Instrument, this 300-megapixel infrared camera will give Roman a deep, panoramic view of the universe. Through the Wide Field Instrument’s surveys, scientists will be able to explore distant exoplanets, stars, galaxies, black holes, dark energy, dark matter, and more. Thanks to this instrument and the observatory’s efficiency, Roman will be able to image large areas of the sky 1,000 times faster than Hubble with the same sharp, sensitive image quality.
“It would be quicker to list the astronomy topics Roman won’t be able to address than those it will,” said Julie McEnery, the Roman senior project scientist at NASA Goddard. “We’ve never had a tool like this before. Roman will revolutionize the way we do astronomy.”
The telescope and instruments were mounted to Roman’s instrument carrier and precisely aligned in the largest clean room at Goddard, where the observatory is being assembled. Now, the whole assembly is being attached to the Roman spacecraft, which will deliver the observatory to its orbit and enable it to function once there.
At the same time, the mission’s deployable aperture cover — a visor that will shield the telescope from unwanted light — is being joined to the outer barrel assembly, which serves as the telescope’s exoskeleton.
“We’ve had an incredible year, and we’re looking forward to another one!” said Bear Witherspoon, a Roman systems engineer at NASA Goddard. “While the payload and spacecraft undergo a smattering of testing together, the team will work toward integrating the solar panels onto the outer barrel assembly.”
That keeps the observatory on track for completion by fall 2026 and launch no later than May 2027.
To virtually tour an interactive version of the telescope, visit:
https://roman.gsfc.nasa.gov/interactive
The Nancy Grace Roman Space Telescope is managed at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, with participation by NASA’s Jet Propulsion Laboratory and Caltech/IPAC in Southern California, the Space Telescope Science Institute in Baltimore, and a science team comprising scientists from various research institutions. The primary industrial partners are BAE Systems Inc. in Boulder, Colorado; L3Harris Technologies in Rochester, New York; and Teledyne Scientific & Imaging in Thousand Oaks, California.
By Ashley Balzer
NASA’s Goddard Space Flight Center, Greenbelt, Md.
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Claire Andreoli
NASA’s Goddard Space Flight Center
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Last Updated Dec 12, 2024 EditorAshley BalzerContactAshley Balzerashley.m.balzer@nasa.govLocationGoddard Space Flight Center Related Terms
Nancy Grace Roman Space Telescope Dark Energy Dark Matter Exoplanets Galaxies Galaxies, Stars, & Black Holes Goddard Space Flight Center Hubble Space Telescope James Webb Space Telescope (JWST) Stars The Universe Explore More
6 min read Primary Instrument for Roman Space Telescope Arrives at NASA Goddard
Article 4 months ago 6 min read NASA Successfully Integrates Coronagraph for Roman Space Telescope
Article 1 month ago 5 min read Telescope for NASA’s Roman Mission Complete, Delivered to Goddard
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By NASA
5 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
An artist’s concept of NASA’s Europa Clipper shows the spacecraft in silhouette against Europa’s surface, with the magnetometer boom fully deployed at top and the antennas for the radar instrument extending out from the solar arrays.NASA/JPL-Caltech Headed to Jupiter’s moon Europa, the spacecraft is operating without a hitch and will reach Mars in just three months for a gravity assist.
NASA’s Europa Clipper, which launched Oct. 14 on a journey to Jupiter’s moon Europa, is already 13 million miles (20 million kilometers) from Earth. Two science instruments have deployed hardware that will remain at attention, extending out from the spacecraft, for the next decade — through the cruise to Jupiter and the entire prime mission.
A SpaceX Falcon Heavy rocket launched it away from Earth’s gravity, and now the spacecraft is zooming along at 22 miles per second (35 kilometers per second) relative to the Sun.
Europa Clipper is the largest spacecraft NASA has ever developed for a planetary mission. It will travel 1.8 billion miles (2.9 billion kilometers) to arrive at Jupiter in 2030 and in 2031 will begin a series of 49 flybys, using a suite of instruments to gather data that will tell scientists if the icy moon and its internal ocean have the conditions needed to harbor life.
For now, the information mission teams are receiving from the spacecraft is strictly engineering data (the science will come later), telling them how the hardware is operating. Things are looking good. The team has a checklist of actions the spacecraft needs to take as it travels deeper into space. Here’s a peek:
Boom Times
Shortly after launch, the spacecraft deployed its massive solar arrays, which extend the length of a basketball court. Next on the list was the magnetometer’s boom, which uncoiled from a canister mounted on the spacecraft body, extending a full 28 feet (8.5 meters).
To confirm that all went well with the boom deployment, the team relied on data from the magnetometer’s three sensors. Once the spacecraft is at Jupiter, these sensors will measure the magnetic field around Europa, both confirming the presence of the ocean thought to be under the moon’s icy crust and telling scientists about its depth and salinity.
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This animation shows how the boom of Europa Clipper’s magnetometer deployed — while the spacecraft was in flight — to its full length of 28 feet (8.5 meters). NASA/JPL-Caltech On the Radar
After the magnetometer, the spacecraft deployed several antennas for the radar instrument. Now extending crosswise from the solar arrays, the four high-frequency antennas form what look like two long poles, each measuring 57.7 feet (17.6 meters) long. Eight rectangular very-high-frequency antennas, each 9 feet (2.76 meters) long, were also deployed — two on the two solar arrays.
“It’s an exciting time on the spacecraft, getting these key deployments done,” said Europa Clipper project manager Jordan Evans of NASA’s Jet Propulsion Laboratory in Southern California. “Most of what the team is focusing on now is understanding the small, interesting things in the data that help them understand the behavior of the spacecraft on a deeper level. That’s really good to see.”
Instrument Checkout
The remaining seven instruments will be powered on and off through December and January so that engineers can check their health. Several instruments, including the visible imager and the gas and dust mass spectrometers, will keep their protective covers closed for the next three or so years to guard against potential damage from the Sun during Europa Clipper’s time in the inner solar system.
Mars-Bound
Once all the instruments and engineering subsystems have been checked out, mission teams will shift their focus to Mars. On March 1, 2025, Europa Clipper will reach Mars’ orbit and begin to loop around the Red Planet, using the planet’s gravity to gain speed. (This effect is similar to how a ball thrown at a moving train will bounce off the train in another direction at a higher speed.) Mission navigators already have completed one trajectory correction maneuver, as planned, to get the spacecraft on the precise course.
At Mars, scientists plan to turn on the spacecraft’s thermal imager to capture multicolored images of Mars as a test operation. They also plan to collect data with the radar instrument so engineers can be sure it’s operating as expected.
The spacecraft will perform another gravity assist in December 2026, swooping by Earth before making the remainder of the long journey to the Jupiter system. At that time, the magnetometer will measure Earth’s magnetic field, calibrating the instrument.
More About Europa Clipper
Europa Clipper’s three main science objectives are to determine the thickness of the moon’s icy shell and its interactions with the ocean below, to investigate its composition, and to characterize its geology. The mission’s detailed exploration of Europa will help scientists better understand the astrobiological potential for habitable worlds beyond our planet.
Managed by Caltech in Pasadena, California, JPL leads the development of the Europa Clipper mission in partnership with the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, for NASA’s Science Mission Directorate in Washington. APL designed the main spacecraft body in collaboration with JPL and NASA’s Goddard Space Flight Center in Greenbelt, Maryland, NASA’s Marshall Space Flight Center in Huntsville, Alabama, and Langley Research Center in Hampton, Virginia. The Planetary Missions Program Office at Marshall executes program management of the Europa Clipper mission. NASA’s Launch Services Program, based at Kennedy, managed the launch service for the Europa Clipper spacecraft.
Find more information about Europa Clipper here:
https://science.nasa.gov/mission/europa-clipper
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Gretchen McCartney
Jet Propulsion Laboratory, Pasadena, Calif.
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gretchen.p.mccartney@jpl.nasa.gov
Karen Fox / Molly Wasser
NASA Headquarters, Washington
202-358-1600
karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
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Last Updated Nov 25, 2024 Related Terms
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By NASA
Credit: NASA Two proposals for missions to observe X-ray and far-infrared wavelengths of light from space were selected by NASA for additional review, the agency announced Thursday. Each proposal team will receive $5 million to conduct a 12-month mission concept study. After detailed evaluation of those studies, NASA expects to select one concept in 2026 to proceed with construction, for a launch in 2032.
The resulting mission will become the first in a new class of NASA astrophysics missions within the agency’s longstanding Explorers Program. The new mission class, Probe Explorers, will fill a gap between flagship and smaller-scale missions in NASA’s exploration of the secrets of the universe.
“NASA’s Explorers Program brings out some of the most creative ideas for missions that help us reveal the unknown about our universe. Establishing this new line of missions – the largest our Astrophysics program has ever competed – has taken that creativity to new heights,” said Nicola Fox, associate administrator, Science Mission Directorate at NASA Headquarters in Washington. “Both of the selected concepts could enable ground-breaking science responsive to the top astrophysics priorities of the decade, develop key technologies for future flagship missions, and offer opportunities for the entire community to use the new observatory, for the benefit of all.”
The National Academies of Sciences, Engineering, and Medicine’s 2020 Decadal Survey, Pathways to Discovery in Astronomy and Astrophysics for the 2020s, recommended NASA establish this new mission class, with the first mission observing either X-ray or far-infrared wavelengths of light. Mission costs for the new Probe Explorers are capped at $1 billion each, not including the cost of the rocket, launch services, or any contributions.
NASA evaluated Probe Explorers proposals based on their scientific merit in alignment with the Decadal Survey’s recommendations, feasibility of development plans, and use of technologies that could support the development of future large missions.
The selected proposals are:
Advanced X-ray Imaging Satellite
This mission would be an X-ray imaging observatory with a large, flat field-of-view and high spatial resolution. It would study the seeds of supermassive black holes; investigate the process of stellar feedback, which influences how galaxies evolve; and help determine the power sources of a variety of explosive phenomena in the cosmos. The observatory would build on the successes of previous X-ray observatories, capturing new capabilities for X-ray imaging and imaging spectroscopy. Principal investigator: Christopher Reynolds, University of Maryland, College Park Project management: NASA’s Goddard Space Flight Center in Greenbelt, Maryland Probe far-Infrared Mission for Astrophysics
This observatory would be a 5.9-foot (1.8-meter) telescope studying far-infrared wavelengths, helping bridge the gap between existing infrared observatories, such as NASA’s James Webb Space Telescope, and radio telescopes. By studying radiant energy that only emerges in the far-infrared, the mission would address questions about the origins and growth of planets, supermassive black holes, stars, and cosmic dust. Principal investigator: Jason Glenn, NASA Goddard Project management: NASA’s Jet Propulsion Laboratory in Southern California The Explorers Program is the oldest continuous NASA program designed to provide frequent, low-cost access to space using principal investigator-led space science investigations relevant to the Science Mission Directorate’s astrophysics and heliophysics programs. Since the Explorer 1 launch in 1958, which discovered Earth’s radiation belts, the Explorers Program has launched more than 90 missions, including the Uhuru and Cosmic Background Explorer missions that led to Nobel prizes for their investigators.
The Explorers Program is managed by NASA Goddard for the Science Mission Directorate, which conducts a wide variety of research and scientific exploration programs for Earth studies, space weather, the solar system and universe.
For more information about the Explorers Program, visit:
https://explorers.gsfc.nasa.gov
-end-
Alise Fisher
Headquarters, Washington
202-617-4977
alise.m.fisher@nasa.gov
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Last Updated Oct 03, 2024 EditorJessica TaveauLocationNASA Headquarters Related Terms
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By NASA
4 min read
NASA’s Instruments Capture Sharpest Image of Earth’s Radiation Belt
From Aug. 19-20, ESA’s (European Space Agency’s) Juice (Jupiter Icy Moons Explorer) mission made history with a daring lunar-Earth flyby and double gravity assist maneuver, a spaceflight first. As the spacecraft zipped past our Moon and home planet, Juice’s instruments came online for a dry run of what they’ll do when they reach Jupiter. During that time, two of NASA’s onboard instruments added another first to the list: capturing the sharpest-ever image of Earth’s radiation belts – swaths of charged particles trapped in Earth’s magnetic shield, or magnetosphere.
The Jovian Energetic Neutrals and Ions (JENI) instrument, built and managed by the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, on behalf of NASA, took the image as Juice soared away from Earth. What it captured is invisible to the human eye. Unlike traditional cameras that rely on light, JENI uses special sensors to capture energetic neutral atoms emitted by charged particles interacting with the extended atmospheric hydrogen gas surrounding Earth. The JENI instrument is the newest generation of this type of camera, building on the success of a similar instrument on NASA’s Cassini mission that revealed the magnetospheres of Saturn and Jupiter.
An illustration showing the trajectory of ESA’s Juice spacecraft during its lunar-Earth gravity assist, featuring a high-resolution ENA image of the million-degree hot plasma halo encircling Earth captured by NASA’s JENI instrument. The white rings denote equatorial distance of 4 and 6 Earth radii. The inset showcases measurements taken by the NASA’s JENI and JoEE instruments during their passage through the radiation belts, revealing a highly structured energetic ion and electron environment. Credit: ESA/NASA/Johns Hopkins APL/Josh Diaz “As soon as we saw the crisp, new images, high fives went around the room,” said Matina Gkioulidou, deputy lead of JENI at APL. “It was clear we had captured the vast ring of hot plasma encircling Earth in unprecedented detail, an achievement that has sparked excitement for what is to come at Jupiter.”
On Aug. 19, JENI and its companion particle instrument Jovian Energetic Electrons (JoEE) made the most of their brief 30-minute encounter with the Moon. As Juice zoomed just 465 miles (750 kilometers) above the lunar surface, the instruments gathered data on the space environment’s interaction with our nearest celestial companion. It’s an interaction scientists expect to see magnified at Jupiter’s moons, as the gas giant’s radiation-rich magnetosphere barrels over them.
On Aug. 20, Juice hurled into Earth’s magnetosphere, passing some 37,000 miles (60,000 km) above the Pacific Ocean, where the instruments got their first taste of the harsh environment that awaits at Jupiter. Racing through the magnetotail, JoEE and JENI encountered the dense, lower-energy plasma characteristic of this region before plunging into the heart of the radiation belts. There, the instruments measured the million-degree plasma encircling Earth to investigate the secrets of plasma heating that are known to fuel dramatic phenomena in planetary magnetospheres.
“I couldn’t have hoped for a better flyby,” said Pontus Brandt, principal investigator of JoEE and JENI at APL. “The richness of the data from our deep-dive through the magnetosphere is astounding. JENI’s image of the entire system we just flew through was the cherry on top. It’s a powerful combination we will exploit in the Jovian system.”
Now after using the Moon’s and Earth’s gravity, Juice’s trajectory has been successfully adjusted for a future encounter with Venus in August 2025. That Venus flyby will serve as a gravitational slingshot, propelling Juice back toward Earth and priming it for two additional flybys in September 2026 and January 2029. Only then will the spacecraft, now boosted into high gear, make its grand arrival at Jupiter in July 2031.
The Johns Hopkins Applied Physics Laboratory, in Laurel, Maryland, manages the JoEE and JENI instruments, which together make up the Particle Environment Package (PEP-Hi) instrument suite, for NASA on ESA’s Juice mission. The JoEE and JENI instruments are part of the Solar System Exploration Program, managed at NASA’s Marshall Space Flight Center for the agency’s Science Mission Directorate in Washington.
For more information on NASA’s involvement with ESA’s Juice mission, visit:
https://science.nasa.gov/mission/juice/
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By NASA
Name: Xiaoyi Li
Title: Instrument Systems Engineer (ISE) of Venus Atmospheric Structure Investigation (VASI) for the Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging (DAVINCI) and Deputy ISE of Comprehensive Auroral Precipitation Experiment (CAPE) instrument for the Geospace Dynamics Constellation (GDC) mission
Formal Job Classification: Instrument Systems Engineer
Organization: Instrument/Payload Systems Engineering Branch, Engineering Directorate (Code 592)
Xiaoyi Li is an instrument systems engineer at NASA’s Goddard Space Flight Center in Greenbelt, Md. “My role involves not only managing technical tasks but also blending a variety of technical skills and personalities,” she said. “Understanding of the technical connections between different components is essential to ensure the integrated systems meet requirements. In addition, helping to cultivate collaboration and synthesize diverse expertise is vital. I find the process of learning about and achieving integration of different personalities within the team particularly rewarding.”Photo Courtesy Xiaoyi Li What do you do and what is most interesting about your role here at Goddard?
I have two roles. As the instrument systems engineer of VASI, I lead the technical team to develop a sensor suite for this component of NASA’s upcoming DAVINCI mission to Venus. I am also the deputy instrument systems engineer of CAPE where I assist the lead for developing the CAPE instrument for the Geospace Dynamics Constellation mission. The most intriguing aspect of my job is to collaborate with two talented and diverse technical teams, learn from team members, and come up with solutions to resolve technical challenges within budget and schedule.
What is your educational background?
I received a bachelor’s degree in mechanical engineering from Tongji University in Shanghai, China. I furthered my education at the University of New South Wales, Australia, where I earned a master’s in mechanical engineering. After I moved to the U.S., I received a Ph.D. in mechanical engineering from the University of Central Florida in Orlando. My doctorate was funded by a NASA grant to design, build and test a spaceflight cryocooler.
Why did you become a mechanical engineer?
I grew up in an engineering family. My mother was a chemical engineer. My father was an architect and structural engineer. I grew up watching them build large factories. While I would like to think I would have become an engineer without their influence, growing up with such incredible role models gave me access to, and an understanding of engineering disciplines that I never really considered any other profession.
What brought you to Goddard?
Upon completing my Ph.D. in 2005, I started out as a mission analyst for launch service programs at NASA’s Kennedy Space Center in Florida. In 2009, I began working as a thermal engineer for NASA’s Wallops Flight Facility in Virginia. In 2010, I came across a position that brought me back to my Ph.D. days and I couldn’t pass up the opportunity. I joined the Cryogenics and Fluids Branch at Goddard.
What did you do at Goddard before your current position?
I contributed to multiple engineering and science studies, proposals, and projects as a cryogenics engineer. Notably, I served as the principal investigator for two IRAD studies. One of the studies was submitted to the Patent Office and later was granted a new patent. Additionally, I was a co-inventor for another patent. Prior to joining my current group, I held the position of instrument cryogenics lead for the Roman Space Telescope. I served as the associate branch head in my current organization before devoting full time as an instrument systems engineer.
What are your main responsibilities as the instrument systems engineer for CAPE and VASI?
As the deputy instrument systems engineer for CAPE, my main responsibility is to assist the lead to coordinate multiple technical teams. The main focus is to work with the mechanical, electrical, thermal, structural, and other engineers to build electron/ion analyzers. For the VASI instrument, which has a smaller team, I take a more direct role in organizing and coordinating the technical work. This position allows me to engage in hands-on engineering tasks, which is extremely gratifying being able to get “my hands dirty.”
My role involves not only managing technical tasks but also blending a variety of technical skills and personalities. Understanding of the technical connections between different components is essential to ensure the integrated systems meet requirements. In addition, helping to cultivate collaboration and synthesize diverse expertise is vital. I find the process of learning about and achieving integration of different personalities within the team particularly rewarding.
How do you coordinate between all the different systems and personalities?
My experience includes over eight years in leadership roles, supported by extensive training and a robust technical background. This includes a one-year detail assignment in Goddard’s Science Mission Directorate. In this role, I facilitate collaboration within the engineering team, as well as between the engineers and the scientists to ensure that the instrument meets scientific objectives while adhering to well established engineering best practices and principles. Additionally, I empower our subject matter experts to pursue their innovative ideas while guiding them toward a unified direction through a shared vision. Although individual approaches may vary, we are all committed to the collective goal of a successful mission.
Who were your mentors and what did they advise?
I am grateful for the guidance of two mentors who have been instrumental in my development. Mr. Dave Everett, a systems engineer by trade and the current head of our branch, has been my technical mentor. He taught me, among many other things, the importance of understanding the overall system. Ms. Maria So, my leadership mentor, is a former senior executive service (SES) member at Goddard. As a fellow Chinese woman and engineer, her influence has been profound. She has guided me and acted as a sounding board for some very exciting but challenging decisions these past years. She also taught me the importance of seeing the bigger picture and the critical organizational leadership role to systems engineering, which has shaped my approach to leadership.
In turn, I apply these teachings and ideas when I informally mentor the younger engineers on my team. I encourage them to tackle problems independently by providing the necessary background knowledge and allowing them the autonomy to make decisions. I guide them when needed, but I believe in balance and the importance of learning through one’s own mistakes.
Li with her leadership mentor, Maria So, at a Goddard “Taste of Asia” event celebrating Asian American, Native Hawaiian and Pacific Islander Heritage Month. “Her influence has been profound,” Li said. “She has guided me and acted as a sounding board for some very exciting but challenging decisions these past years. She also taught me the importance of seeing the bigger picture and the critical organizational leadership role to systems engineering, which has shaped my approach to leadership.”Photo courtesy Xiaoyi Li What is your involvement with the Asian American Native Hawaiian and Pacific Islander Employee Resource Group (AANHPI)?
I have been actively involved with the group, and I recently served as co-chair for three years. Our group is dedicated to advocating for the wellness of the Asian American community within Goddard. Our group also addresses any concerns from the community members by reporting directly to Goddard senior management. In addition, we foster a sense of community and support among members through community events including our annual “Taste of Asia and the Pacific Islands” lunch event at Goddard.
What do you do for fun?
I enjoy cooking a variety of cuisines, including Chinese and Thai (which I learned in Australia), as well as classic American dishes. My favorite culinary challenge is a rib roast using suis vide method, which involves 18 hours of slow cooking before finishing it in the oven! Additionally, I enjoy playing video games with my family and friends, which is a great way to relax and connect.
By Elizabeth M. Jarrell
NASA’s Goddard Space Flight Center, Greenbelt, Md.
Conversations With Goddard is a collection of Q&A profiles highlighting the breadth and depth of NASA’s Goddard Space Flight Center’s talented and diverse workforce. The Conversations have been published twice a month on average since May 2011. Read past editions on Goddard’s “Our People” webpage.
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Last Updated Aug 14, 2024 EditorRob GarnerContactRob Garnerrob.garner@nasa.govLocationGoddard Space Flight Center Related Terms
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