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By NASA
Acting Director of NASA’s Johnson Space Center, Steve Koerner. Credit: NASA/Norah Moran NASA has selected Stephen Koerner as acting director of Johnson Space Center. Koerner previously served as Johnson’s deputy director.
“It is an honor to accept my new role as acting director for Johnson,” Koerner said. “Our employees are key to our nation’s human spaceflight goals. I am continually impressed with what our workforce accomplishes and am proud to be named the leader of such an incredible team dedicated to mission excellence.”
Koerner previously served as deputy director of NASA Johnson beginning in July 2021, overseeing strategic workforce planning, serving as Designated Agency Safety Health Officer (DASHO), and supporting the Johnson Center Director in mission reviews. Before his appointment to deputy director, Koerner served as director of the Flight Operations Directorate (FOD) for two years. In that role, he was responsible for selecting and protecting astronauts, and for the planning, training, and execution of human space flight and aviation missions. He managed an annual budget of $367 million, 600 civil servants and military personnel, and 2300 contractor personnel. He oversaw the Astronaut Office, the Flight Director Office, the Mission Control Center, human spaceflight training facilities, and Johnson’s Aviation Operations Division. During this tenure he was also responsible for FOD’s flight readiness of the first commercial human spaceflight mission, ushering in a new era of domestic launch capability and the return of American astronauts launching from American soil.
Prior to assuming his position as director of Flight Operations, Koerner served in several senior executive roles, including:
Johnson Space Center Associate Director from 2018 to 2019 Johnson Space Center Chief Financial Officer (CFO) from 2017 to 2018 Deputy Director of Flight Operations from 2014 to 2017 Deputy Director Mission Operations from 2007 to 2014 Koerner joined Johnson full-time in 1992. He has extensive operations experience including serving as an environmental systems space shuttle flight controller, where he supported 41 space shuttle flights in Mission Control. Since that time, he has served in a series of progressively more responsible positions, including lead for two International Space Station flight control groups, chief of the space station’s Data Systems Flight Control Branch, chief of the Mission Operations Directorate’s Management Integration Office, and as the Mission Operation Directorate’s manager for International Space Station operations.
Additional special assignments throughout his career include:
Project manager for Johnson’s Crew Exploration Vehicle Avionics Integration Lab (June 2007 –June 2008) Member of NASA’s Human Exploration Framework Team (April 2010 –October 2010) Member of NASA’s Standing Review Board that provided an independent assessment at life cycle review milestones for the Multi-Purpose Crew Vehicle Program, the Space Launch System Program and the Ground Systems Development and Operations Program (October 2011 – August 2014) Lead of NASA’s Mission Operations Capability Team (October 2015 –April 2017) “Steve has an accomplished career serving human spaceflight. His vision and dedication to the Johnson workforce makes him the perfect person to lead the Johnson team forward as acting director,” said Vanessa Wyche, NASA acting associate administrator. “Steve is an asset to the center and the agency—as both a proven technical expert and a leader.”
Throughout his career, Koerner has been recognized for outstanding technical achievements and leadership, receiving two Superior Accomplishment Awards, the Outstanding Leadership Medal, the Johnson Space Center Director’s Commendation Award, two group achievement awards, the Exceptional Service Medal, and the Presidential Rank Award.
Koerner is a native of Stow, Ohio. He earned a bachelor’s degree in mechanical engineering from the University of Akron in Ohio, and a master’s degree in business administration from LeTourneau University in Longview, Texas.
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By NASA
4 Min Read Science in Orbit: Results Published on Space Station Research in 2024
NASA and its international partners have hosted research experiments and fostered collaboration aboard the International Space Station for over 25 years. More than 4,000 investigations have been conducted, resulting in over 4,400 research publications with 361 in 2024 alone. Space station research continues to advance technology on Earth and prepare for future space exploration missions.
Below is a selection of scientific results that were published over the past year. For more space station research achievements and additional information about the findings mentioned here, check out the 2024 Annual Highlights of Results.
Making stronger cement
NASA’s Microgravity Investigation of Cement Solidification (MICS) observes the hydration reaction and hardening process of cement paste on the space station. As part of this experiment, researchers used artificial intelligence to create 3D models from 2D microscope images of cement samples formed in microgravity. Characteristics such as pore distribution and crystal growth can impact the integrity of any concrete-like material, and these artificial intelligence models allow for predicting internal structures that can only be adequately captured in 3D. Results from the MICS investigation improve researchers’ understanding of cement hardening and could support innovations for civil engineering, construction, and manufacturing of industrial materials on exploration missions.
European Space Agency (ESA) astronaut Alexander Gerst works on the Microgravity Investigation of Cement Solidification (MICS) experiment in a portable glovebag aboard the International Space Station.NASA Creating Ideal Clusters
The JAXA (Japan Aerospace Exploration Agency) Colloidal Clusters investigation uses the attractive forces between oppositely charged particles to form pyramid-shaped clusters. These clusters are a key building block for the diamond lattice, an ideal structure in materials with advanced light-manipulation capabilities. Researchers immobilized clusters on the space station using a holding gel with increased durability. The clusters returned to Earth can scatter light in the visible to near-infrared range used in optical and laser communications systems. By characterizing these clusters, scientists can gain insights into particle aggregation in nature and learn how to effectively control light reflection for technologies that bend light, such as specialized sensors, high-speed computing components, and even novel cloaking devices.
A fluorescent micrograph image shows colloidal clusters immobilized in gel. Negatively charged particles are represented by green fluorescence, and positively charged particles are red. JAXA/ Nagoya City University Controlling Bubble Formation
NASA’s Optical Imaging of Bubble Dynamics on Nanostructured Surfaces studies how different types of surfaces affect bubbles generated by boiling water on the space station. Researchers found that boiling in microgravity generates larger bubbles and that bubbles grow about 30 times faster than on Earth. Results also show that surfaces with finer microstructures generate slower bubble formation due to changes in the rate of heat transfer. Fundamental insights into bubble growth could improve thermal cooling systems and sensors that use bubbles.
High-speed video shows dozens of bubbles growing in microgravity until they collapse.Tengfei Luo Evaluating Cellular Responses to Space
The ESA (European Space Agency) investigation Cytoskeleton attempts to uncover how microgravity impacts important regulatory processes that control cell multiplication, programmed cell death, and gene expression. Researchers cultured a model of human bone cells and identified 24 pathways that are affected by microgravity. Cultures from the space station showed a reduction of cellular expansion and increased activity in pathways associated with inflammation, cell stress, and iron-dependent cell death. These results help to shed light on cellular processes related to aging and the microgravity response, which could feed into the development of future countermeasures to help maintain astronaut health and performance.
Fluorescent staining of cells from microgravity (left) and ground control (right).ESA Improving Spatial Awareness
The CSA (Canadian Space Agency) investigation Wayfinding investigates the impact of long-duration exposure to microgravity on the orientation skills in astronauts. Researchers identified reduced activity in spatial processing regions of the brain after spaceflight, particularly those involved in visual perception and orientation of spatial attention. In microgravity, astronauts cannot process balance cues normally provided by gravity, affecting their ability to perform complex spatial tasks. A better understanding of spatial processes in space allows researchers to find new strategies to improve the work environment and reduce the impact of microgravity on the spatial cognition of astronauts.
An MRI (magnetic resonance imaging) scan of the brain shows activity in the spatial orientation regions.NeuroLab Monitoring low Earth orbit
The Roscomos-ESA-Italian Space Agency investigation Mini-EUSO (Multiwavelength Imaging New Instrument for the Extreme Universe Space Observatory) is a multipurpose telescope designed to examine light emissions entering Earth’s atmosphere. Researchers report that Mini-EUSO data has helped to develop a new machine learning algorithm to detect space debris and meteors that move across the field of view of the telescope. The algorithm showed increased precision for meteor detection and identified characteristics such as rotation rate. The algorithm could be implemented on ground-based telescopes or satellites to identify space debris, meteors, or asteroids and increase the safety of space activities.
The Mini-EUSO telescope is shown in early assembly.JEM-EUSO Program For more space station research achievements and additional information about the findings mentioned here, check out the 2024 Annual Highlights of Results.
Destiny Doran
International Space Station Research Communications Team
Johnson Space Center
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By NASA
The Propulsion Bus Module of Gateway’s Power and Propulsion Element undergoes assembly and installations at Maxar Space Systems in Palo Alto, California.Maxar Space Systems NASA’s Artemis IV astronauts will be the first to inhabit the Gateway lunar space station, opening the door to greater exploration of the Moon and paving the way to Mars. Gateway’s Power and Propulsion Element, which will make the station the most powerful solar electric spacecraft ever flown, takes shape at Maxar Space Systems. In lunar orbit, Gateway will allow NASA to conduct unique science and exploration while preparing astronauts to go to the Red Planet.
Technicians install key hardware on the element’s Propulsion Bus Module following installation of both electric propulsion and chemical propulsion control modules. The image highlights a propellant tank exposed on the right, positioned within the central cylinder of the element.
The Power and Propulsion Element will launch with Gateway’s HALO (Habitation and Logistics Outpost) ahead of NASA’s Artemis IV mission. During Artemis IV, V, and VI, international crews of astronauts will assemble the lunar space station around the Moon and embark on expeditions to the Moon’s South Pole region.
The Power and Propulsion Element is managed out of NASA’s Glenn Research Center in Cleveland and built by Maxar Space Systems in Palo Alto, California.
Gateway is an international collaboration to establish humanity’s first lunar space station as a central component of the Artemis architecture designed to return humans to the Moon for scientific discovery and chart a path for the first human missions to Mars.
The Propulsion Bus Module of Gateway’s Power and Propulsion Element undergoes assembly and installations at Maxar Space Systems in Palo Alto, California.Maxar Space Systems An artist’s rendering of the Gateway lunar space station, including its Power and Propulsion Element, shown here with its solar arrays deployed. Gateway will launch its initial elements to lunar orbit ahead of the Artemis IV mission. NASA/Alberto Bertolin An artist’s rendering of Gateway with the Power and Propulsion Element’s advanced thrusters propelling the lunar space station to the Moon. NASA/Alberto Bertolin Learn More About Gateway Facebook logo @NASAGateway @NASA_Gateway Instagram logo @nasaartemis Share
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Last Updated Feb 25, 2025 ContactJacqueline Minerdjacqueline.minerd@nasa.govLocationGlenn Research Center Related Terms
Artemis Artemis 4 Earth's Moon Exploration Systems Development Mission Directorate Gateway Program Gateway Space Station Glenn Research Center Humans in Space Technology Technology for Space Travel Explore More
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By NASA
4 Min Read Five Facts About NASA’s Moon Bound Technology
A view of the Moon from Earth, zooming up to IM-2's landing site at Mons Mouton, which is visible in amateur telescopes. Credits: NASA/Scientific Visualization Studio NASA is sending revolutionary technologies to the Moon aboard Intuitive Machines’ second lunar delivery as part of the agency’s CLPS (Commercial Lunar Payload Services) initiative and Artemis campaign to establish a long-term presence on the lunar surface.
As part of this CLPS flight to the Moon, NASA’s Space Technology Mission Directorate will test novel technologies to learn more about what lies beneath the lunar surface, explore its challenging terrain, and improve in-space communication.
The launch window for Intuitive Machines’ second CLPS delivery, IM-2, opens no earlier than Wednesday, Feb. 26 from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. After the Intuitive Machines’ Nova-C class lunar lander reaches Mons Mouton, a lunar plateau near the Moon’s South Pole region, it will deploy several NASA and commercial technologies including a drill and mass spectrometer, a new cellular communication network, and a small drone that will survey difficult terrain before returning valuable data to Earth.
Caption: The Intuitive Machines lunar lander that will deliver NASA science and technology to the Moon as part of the agency’s CLPS (Commercial Lunar Payload Services) initiative and Artemis campaign is encapsulated in the fairing of the SpaceX Falcon 9 rocket. Credit: SpaceX Here are five things to know about this unique mission to the Moon, the technologies we are sending, and the teams making it happen!
1. Lunar South Pole Exploration
IM-2’s landing site is known as one of the flatter regions in the South Pole region, suitable to meet Intuitive Machines’ requirement for a lit landing corridor and acceptable terrain slope. The landing location was selected by Intuitive Machines using data acquired by NASA’s Lunar Reconnaissance Orbiter.
An illustration of Mons Mouton, a mesa-like lunar mountain that towers above the landscape carved by craters near the Moon’s South Pole.Credit: NASA/Scientific Visualization Studio 2. New Technology Demonstrations
NASA’s Polar Resources Ice Mining Experiment, known as PRIME-1, is a suite of two instruments – a drill and mass spectrometer – designed to demonstrate our capability to look for ice and other resources that could be extracted and used to produce propellant and breathable oxygen for future explorers. The PRIME-1 technology will dig up to about three feet below the surface into the lunar soil where it lands, gaining key insight into the soil’s characteristics and temperature while detecting other resources that may lie beneath the surface.
Data from the PRIME-1 technology demonstration will be made available to the public following the mission, enabling partners to accelerate the development of new missions and innovative technologies.
The Polar Resources Ice Mining Experiment-1 (PRIME-1) will help scientists search for water at the lunar South Pole.Credit: NASA/Advanced Concepts Lab 3. Mobile Robots
Upon landing on the lunar surface, two commercial Tipping Point technology demonstrations will be deployed near Intuitive Machines’ lander, Tipping Points are collaborations between NASA’s Space Technology Mission Directorate and industry that foster the development of commercial space capabilities and benefit future NASA missions.
The first is a small hopping drone developed by Intuitive Machines. The hopper, named Grace, will deploy as a secondary payload from the lander and enable high-resolution surveying of the lunar surface, including permanently shadowed craters around the landing site. Grace is designed to bypass obstacles such as steep inclines, boulders, and craters to cover a lot of terrain while moving quickly, which is a valuable capability to support future missions on the Moon and other planets, including Mars.
Artist rendering of the Intuitive Machines Micro Nova Hopper.Credit: Intuitive Machines 4. Lunar Surface Communication
The next Tipping Point technology will test a Lunar Surface Communications System developed by Nokia. This system employs the same cellular technology used here on Earth, reconceptualized by Nokia Bell Labs to meet the unique requirements of a lunar mission. The Lunar Surface Communications System will demonstrate proximity communications between the lander, a Lunar Outpost rover, and the hopper.
Artist rendering of Nokia’s Lunar Surface Communication System (LSCS), which aims to demonstrate cellular-based communications on the lunar surface. Credit: Intuitive Machines 5. Working Together
NASA is working with several U.S. companies to deliver technology and science to the lunar surface through the agency’s CLPS initiative.
NASA’s Space Technology Mission Directorate plays a unique role in the IM-2 mission by strategically combining CLPS with NASA’s Tipping Point mechanism to maximize the potential benefit of this mission to NASA, industry, and the nation.
NASA’s Lunar Surface Innovation Initiative and Game Changing Development program within the agency’s Space Technology Mission Directorate led the maturation, development, and implementation of pivotal in-situ resource utilization, communication, and mobility technologies flying on IM-2.
Join NASA to watch full mission updates, from launch to landing on NASA+, and share your experience on social media. Mission updates will be made available on NASA’s Artemis blog.
A team of engineers from NASA’s Johnson Space Center in Houston and Honeybee Robotics in Altadena, California inspect TRIDENT – short for The Regolith Ice Drill for Exploring New Terrain – shortly after its arrival at the integration and test facility.Credit: NASA/Robert Markowitz Artist’s rendering of Intuitive Machines’ Athena lunar lander on the Moon. Credit: Intuitive Machines
Artist conception: Earth emerges from behind Mons Mouton on the horizon.Credit: NASA/Scientific Visualization Studio Explore More
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Last Updated Feb 24, 2025 EditorStefanie PayneContactAnyah Demblinganyah.dembling@nasa.govLocationNASA Headquarters Related Terms
Space Technology Mission Directorate Artemis Commercial Lunar Payload Services (CLPS) Game Changing Development Program Kennedy Space Center Lunar Surface Innovation Initiative Missions NASA Headquarters Research and Technology at Kennedy Space Center Science Mission Directorate
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By NASA
The unpiloted Roscosmos Progress spacecraft pictured on Aug. 13, 2024, from the International Space Station.Credit: NASA NASA will provide live launch and docking coverage of a Roscosmos cargo spacecraft delivering approximately three tons of food, fuel, and supplies for the crew aboard the International Space Station.
The unpiloted Roscosmos Progress 91 spacecraft is scheduled to launch at 4:24 p.m. EST, Thursday, Feb. 27 (2:24 a.m. Baikonur time, Friday, Feb. 28), on a Soyuz rocket from the Baikonur Cosmodrome in Kazakhstan.
Live launch coverage will begin at 4 p.m. on NASA+. Learn how to watch NASA content through a variety of platforms, including social media.
After a two-day in-orbit journey to the station, the spacecraft will dock autonomously to the aft port of the Zvezda service module at 6:03 p.m. Saturday, March 1. NASA’s rendezvous and docking coverage will begin at 5:15 p.m. on NASA+.
The Progress 91 spacecraft will remain docked to the space station for approximately six months before departing for re-entry into Earth’s atmosphere to dispose of trash loaded by the crew.
The International Space Station is a convergence of science, technology, and human innovation that enables research not possible on Earth. For more than 24 years, NASA has supported a continuous U.S. human presence aboard the orbiting laboratory, through which astronauts have learned to live and work in space for extended periods of time. The space station is a springboard for developing a low Earth economy and NASA’s next great leaps in exploration, including missions to the Moon under Artemis and, ultimately, human exploration of Mars.
Get breaking news, images and features from the space station on Instagram, Facebook, and X.
Learn more about the International Space Station, its research, and its crew, at:
https://www.nasa.gov/station
-end-
Claire O’Shea
Headquarters, Washington
202-358-1100
claire.a.o’shea@nasa.gov
Sandra Jones
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov
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Last Updated Feb 24, 2025 LocationNASA Headquarters Related Terms
International Space Station (ISS) Humans in Space ISS Research Johnson Space Center Space Operations Mission Directorate View the full article
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