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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Since childhood, Derrick Bailey always had an early fascination with aeronautics. Military fighter jet pilots were his childhood heroes, and he dreamed of joining the aerospace industry. This passion was a springboard into his 17-year career at NASA, where Bailey plays an important role in enabling successful rocket launches.
Bailey is the Launch Vehicle Certification Manager in the Launch Services Program (LSP) within the Space Operations Mission Directorate. In this role, he helps NASA outline the agency’s risk classifications of new rockets from emerging and established space companies.
“Within my role, I formulate a series of technical and process assessments for NASA LSP’s technical team to understand how companies operate, how vehicles are designed and qualified, and how they perform in flight,” Bailey said.
Beyond technical proficiency and readiness, a successful rocket launch relies on establishing a strong foundational relationship between NASA and the commercial companies involved. Bailey and his team ensure effective communication with these companies to provide the guidance, data, and analysis necessary to support them in overcoming challenges.
“We work diligently to build trusting relationships with commercial companies and demonstrate the value in partnering with our team,” Bailey said.
Bailey credits a stroke of fate that landed him at the agency. During his senior year at Georgia Tech, where he was pursuing a degree in aerospace engineering, Bailey almost walked past the NASA tent at a career fair. However, he decided to grab a NASA sticker and strike up a conversation, which quickly turned into an impromptu interview. He walked away that day with a job offer to work on the now-retired Space Shuttle Program at the agency’s Kennedy Space Center in Florida.
“I never imagined working at NASA,” Bailey said. “Looking back, it’s unbelievable that a chance encounter resulted in securing a job that has turned into an incredible career.”
Thinking about the future, Bailey is excited about new opportunities in the commercial space industry. Bailey sees NASA as a crucial advisor and mentor for commercial sector while using industry capabilities to provide more cost-effective access to space.
Derrick Bailey, launch vehicle certification manager for NASA’s Launch Services Program
“We are the enablers,” Bailey said of his role in the directorate. “It is our responsibility to provide the best opportunity for future explorers to begin their journey of discovery in deep space and beyond.”
Outside of work, Bailey enjoys spending time with his family, especially his two sons, who keep him busy with trips to the baseball diamond and homework sessions. Bailey also enjoys hands-on activities, like working on cars, off-road vehicles, and house projects – hobbies he picked up from his mechanically inclined father. Additionally, at the beginning of 2025, his wife accepted a program specialist position with LSP, an exciting development for the entire Bailey family.
“One of my wife’s major observations early on in my career was how much my colleagues genuinely care about one another and empower people to make decisions,” Bailey explained. “These are the things that make NASA the number one place to work in the government.”
NASA’s Space Operations Mission Directorate maintains a continuous human presence in space for the benefit of people on Earth. The programs within the directorate are the hub of NASA’s space exploration efforts, enabling Artemis, commercial space, science, and other agency missions through communication, launch services, research capabilities, and crew support.
To learn more about NASA’s Space Operation Mission Directorate, visit:
https://www.nasa.gov/directorates/space-operations
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Last Updated Jun 26, 2025 Related Terms
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By NASA
Editor’s note: This interview was conducted in October 2023.
As the International Space Station approaches 25 years of continuous human presence on Nov. 2, 2025, it is a meaningful moment to recognize those who have been there since the beginning—sharing the remarkable achievements of human spaceflight with the world.
If you have ever witnessed the live coverage of a NASA spacewalk or launch, then you know the captivating voice of celestial storyteller Rob Navias. Navias effortlessly blends expertise, enthusiasm, and profound insight into every mission.
Rob Navias on console in the Mission Control Center covering an Extravehicular Activity aboard the International Space Station. NASA/Bill Stafford I relay the facts and data with history in mind. You need to maintain a sense of history if you're going to be able to tell the contemporary story properly.
Rob Navias
Public Affairs Officer and Mission Commentator
Navias works within the Office of Public Affairs on mission operations and television in NASA Johnson Space Center’s Office of Communications, leading public affairs activities involving launches and landings of U.S. astronauts and international partner crew members. He is iconically known as the voice of NASA.
He has been a part of some of the most impactful moments in space exploration history, communicating the facts in real time with unmatched clarity. He covered every shuttle mission from the maiden launch of Columbia in April 1981 to Atlantis’ final voyage in July 2011. Navias is known for connecting others accurately and honestly to key moments in time.
Navias’ extraordinary contributions to space communications garnered him the 2017 Space Communicator Award from the Rotary National Award for Space Achievement Foundation. This prestigious accolade is presented to individuals or teams who have made remarkable contributions to public understanding and appreciation of space exploration. Navias’ unwavering dedication to NASA was recognized with the 2023 Length of Federal Service Award, commemorating his 30-year commitment to the agency.
His legacy continued on screen in Cosmic Dawn, the NASA documentary exploring the James Webb Space Telescope’s incredible journey. Featured for his role as the launch commentator during Webb’s Christmas Day 2021 liftoff, Navias brought historical context and lived experience to one of NASA’s most ambitious missions.
As long as we can maintain a shared vision and curiosity, all nations can go a long way up to the universe.
Rob Navias
Public Affairs Officer and Mission Commentator
He began his broadcast career as a correspondent for networks covering the Space Shuttle Program. Before joining NASA in 1993, Navias had a 25-year career in broadcast journalism where he reported the voyage of Pioneer 11, a robotic space probe that studied the asteroid belt and the rings of Saturn, as well as the test flights for the Space Shuttle Enterprise at Edwards Air Force Base in California and the Voyager missions from NASA’s Jet Propulsion Laboratory in Southern California.
Navias also covered the Apollo-Soyuz Test Project as a broadcast journalist. That first international human spaceflight showed the world there was a way for nations to work together peacefully for a common goal, Navias stated.
“Once the commitment was made to fund the construction of an international space station, it broadened the agency’s scope to work multiple programs that could be a stepping stone beyond low Earth orbit,” Navias said.
Rob Navias (left), accompanied by Phil Engelauf and John Shannon, during an STS-114 Flight Director press briefing.NASA I think the greatest legacy of the International Space Station will ultimately be the diplomatic oasis it has provided in orbit for exploration and scientific research.
ROB Navias
Public Affairs Officer and Mission Commentator
Navias explained that during his time at NASA, he has learned a lot about himself. “The day you stop absorbing information, the day that you grow tired of learning new things is the day you need to walk away,” he said. “The challenge of spaceflight keeps me here at NASA.”
Navias underscored the importance of nurturing and retaining the agency’s brilliant workforce who have shaped the pioneering mindset of human space exploration. He believes blending talent, resources, and industry expertise is the key to returning to the Moon and going to Mars. This collaborative mindset has not only resulted in establishing a laboratory in low Earth orbit but also paved the way for future missions.
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By Space Force
Gen. Mike Guetlein, Vice Chief of Space Operations, visits Kirtland Air Force Base, signaling the base’s growing importance in space innovation, research and national defense.
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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
Instruments in space are helping scientists map wastewater plumes flowing into the Pacific Ocean from the heavily polluted Tijuana River, seen here with the San Diego sky-line to the north. NOAA Proof-of-concept results from the mouth of the Tijuana River in San Diego County show how an instrument called EMIT could aid wastewater detection.
An instrument built at NASA’s Jet Propulsion Laboratory to map minerals on Earth is now revealing clues about water quality. A recent study found that EMIT (Earth Surface Mineral Dust Source Investigation) was able to identify signs of sewage in the water at a Southern California beach.
The authors of the study examined a large wastewater plume at the mouth of the Tijuana River, south of Imperial Beach near San Diego. Every year, millions of gallons of treated and untreated sewage enter the river, which carries pollutants through communities and a national reserve on the U.S.-Mexico border before emptying into the Pacific Ocean. Contaminated coastal waters have been known to impact human health — from beachgoers to U.S. Navy trainees — and harm marine ecosystems, fisheries, and wildlife.
For decades scientists have tracked water quality issues like harmful algal blooms using satellite instruments that analyze ocean color. Shades that range from vibrant red to bright green can reveal the presence of algae and phytoplankton. But other pollutants and harmful bacteria are more difficult to monitor because they’re harder to distinguish with traditional satellite sensors.
A plume spreads out to sea in this image captured off San Diego by the Sentinel-2 satellite on March 24, 2023. Both a spectroradiometer used to analyze water samples (yellow star) and NASA’s EMIT identified in the plume signs of a type of bacterium that can sicken humans and animals.SDSU/Eva Scrivner That’s where EMIT comes in. NASA’s hyperspectral instrument orbits Earth aboard the International Space Station, observing sunlight reflecting off the planet below. Its advanced optical components split the visible and infrared wavelengths into hundreds of color bands. By analyzing each satellite scene pixel by pixel at finer spatial resolution, scientists can discern what molecules are present based on their unique spectral “fingerprint.”
Scientists compared EMIT’s observations of the Tijuana River plume with water samples they tested on the ground. Both EMIT and the ground-based instruments detected a spectral fingerprint pointing to phycocyanin, a pigment in cyanobacteria, an organism that can sicken humans and animals that ingest or inhale it.
‘Smoking Gun’
Many beachgoers are already familiar with online water-quality dashboards, which often rely on samples collected in the field, said Christine Lee, a scientist at JPL in Southern California and a coauthor of the study. She noted the potential for EMIT to complement these efforts.
“From orbit you are able to look down and see that a wastewater plume is extending into places you haven’t sampled,” Lee said. “It’s like a diagnostic at the doctor’s office that tells you, ‘Hey, let’s take a closer look at this.’”
Lead author Eva Scrivner, a doctoral student at the University of Connecticut, said that the findings “show a ‘smoking gun’ of sorts for wastewater in the Tijuana River plume.” Scrivner, who led the study while at San Diego State University, added that EMIT could be useful for filling data gaps around intensely polluted sites where traditional water sampling takes a lot of time and money.
EMIT’s Many Uses
The technology behind EMIT is called imaging spectroscopy, which was pioneered at JPL in the 1980s. Imaging spectrometers developed at JPL over the decades have been used to support areas ranging from agriculture to forest health and firefighting.
When EMIT was launched in July 2022, it was solely aimed at mapping minerals and dust in Earth’s desert regions. That same sensitivity enabled it to spot the phycocyanin pigments off the California coast.
Scrivner hadn’t anticipated that an instrument initially devoted to exploring land could reveal insights about water. “The fact that EMIT’s findings over the coast are consistent with measurements in the field is compelling to water scientists,” she said. “It’s really exciting.”
To learn more about EMIT, visit:
https://earth.jpl.nasa.gov/emit/
News Media Contacts
Jane J. Lee / Andrew Wang
Jet Propulsion Laboratory, Pasadena, Calif.
626-379-6874 / 818-354-0307
jane.j.lee@jpl.nasa.gov / andrew.wang@jpl.nasa.gov
Written by Sally Younger
2025-078
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Last Updated Jun 12, 2025 Related Terms
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By NASA
2 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
NASA Systems Engineer Daniel Eng serves his second year as a judge for the Aerospace Valley Robotics Competition at the Palmdale Aerospace Academy in Palmdale, California, in 2019. NASA/Lauren Hughes As a child in the 1960s, Daniel Eng spent his weekends in New York City’s garment district in Manhattan’s Lower East Side, clipping loose threads off finished clothing. He worked alongside his mother, a seamstress, and his father, a steam press operator, where he developed an eye for detail and a passion for learning. Now, he applies these capabilities at NASA, where he works as an engineer for the Air Mobility Pathfinders project.
“I often wonder whether the NASA worm magnet that someone left on my refrigerator in college, which I kept all these years, may have something to do with me ending up at NASA,” Eng said.
His route to NASA was not straightforward. Eng dropped out of high school to join the U.S. Army during the Vietnam War. He earned a GED certificate while on active duty and after his service earned a bachelor’s degree in electrical engineering from the University of Pennsylvania.
After college, Eng worked as a researcher investigating laser communications for the U.S. Navy, work which launched his career in aerospace. He then held jobs at several global corporations before landing at NASA.
NASA systems engineer, Daniel Eng, right, talks with student participants at the 2019 Aerospace Valley Robotics Competition at the Palmdale Aerospace Academy in Palmdale, California.NASA/Lauren Hughes “Looking back now, the Navy was ‘my launching point’ into the aerospace industry,” Eng said. “In more than four decades, I held various positions rising through the ranks ranging from circuit card design to systems analyst to production support to project and program management for advanced technology systems on a multitude of military and commercial aircraft projects.”
Today, he uses virtual models to plan and develop flight test requirements for piloted and automated aircraft, which will help guide future air taxi operations in cities.
“Engineers can virtually test computer models of designs, concepts, and operations before they are in place or even built, providing a safe and cost-effective way to verify the processes work the way they should,” Eng said.
He tells his grandkids to stay curious and ask a lot of questions so they can learn as much as possible.
“Be courteous, humble, kind, and respectful of people, and always remind yourself that you are just one human being among many ‘Earthlings,’” Eng said. “Teamwork is a very important aspect of success because rarely, if ever, does one person succeed on their own without help from others.”
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Last Updated Jun 09, 2025 EditorDede DiniusContactLaura Mitchelllaura.a.mitchell@nasa.govLocationArmstrong Flight Research Center Related Terms
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