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Remarks by CSO Gen. Chance Saltzman at the 2025 Air and Space Forces Association’s Warfare Symposium
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By Space Force
Chief of Space Operations Gen. Chance Saltzman spelled out the Space Force’s priorities and the path it must follow to ensure space superiority during a high-profile keynote address March 3.
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By Space Force
The Department of the Air Force released the memorandum Department of the Air Force Hiring Freeze pursuant to Secretary of Defense Memorandum “Immediate Civilian Hiring Freeze for Alignment with National Defense Priorities.”
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By NASA
Preventing biofilm formation in space
Ashley Keeley, University of Idaho, holds an anti-bacterial coating sample.University of Idaho Student Payload Opportunity with Citizen Science Team Two anti-microbial coatings reduced formation of biofilms in microgravity and have potential for use in space. Controlling biofilms could help protect human health and prevent corrosion and degradation of equipment on future long-duration space missions.
Biofilms, communities of microorganisms that attach to a surface, can damage mechanical systems and present a risk of disease transmission. Bacteria Resistant Polymers in Space examined how microgravity affects polymer materials designed to prevent or reduce biofilm formation. Better anti-fouling coatings also could reduce disease transmission on Earth.
Evaluating organ changes in lunar gravity
Set up for the Mouse Epigenetics experiment aboard the International Space Station. NASA Researchers found different changes in gene expression and other responses to simulated lunar gravity levels in specific organs. This finding could help determine safe gravity thresholds and support development of ways to maintain skeletal and immune function on future space journeys.
Spaceflight can affect skeletal and immune system function, but the molecular mechanisms of these changes are not clear. Mouse Epigenetics, a JAXA (Japan Aerospace Exploration Agency) investigation, studied gene expression changes in mice that spent a month in space and in the DNA of their offspring. Results could help determine spaceflight’s long-term effects on genetic activity, including changes within individual organs and those that can be inherited later.
Performance report for cosmic ray observatory
The CALorimetric Electron Telescope instrument is visible on the far left of the space station’s Kibo laboratory module. JAXA (Japanese Aerospace Exploration Agency)/Norishige Kanai Researchers report on-orbit performance from the first 8 years of operation of the International Space Station’s cosmic ray observatory, CALET. The instrument has provided valuable data on cosmic ray, proton, and helium spectra; produced a gamma-ray sky map; observed gamma-ray bursts; and searched for gravitational wave counterparts and solar effects.
The JAXA CALorimetric Electron Telescope or CALET helps address questions such as the origin and acceleration of cosmic rays and the existence of dark matter and nearby cosmic-ray sources. The instrument also could help characterize risks from the radiation environment that humans and electronics experience in space.
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By NASA
Official NASA portrait of Norman D. Knight. Credit: NASA NASA has selected Norman Knight as acting deputy director of Johnson Space Center. Knight currently serves as Director of Johnson’s Flight Operations Directorate (FOD), responsible for astronaut training and for overall planning, directing, managing, and implementing overall mission operations for NASA human spaceflight programs. This also includes management for all Johnson aircraft operations and aircrew training. Knight will serve in this dual deputy director and FOD director role for the near term.
“It is an honor to accept my new role as acting deputy director for Johnson,” Knight said. “Human spaceflight is key to our agency’s mission and our Johnson team is unified in that goal. The successes we see every day are the evidence of that. It never ceases to amaze me what our team is capable of.”
Knight began his career at the Johnson Space Center as a Space Shuttle mechanical systems flight controller, working 40 missions in this capacity. He progressed through management roles with increasing responsibility, and in 2000, he was selected as a flight director and worked in that capacity for numerous International Space Station expeditions and Space Shuttle missions. In 2009, he became the deputy chief of the Flight Director Office and participated in a NASA fellowship at Harvard Business School in general management. In 2012, Knight was selected as the chief of the Flight Director Office and then in 2018 as deputy director of the Flight Operations Directorate after serving a temporary assignment as the assistant administrator, Human Exploration and Operations Mission Directorate at NASA Headquarters. In 2021, Knight was selected as the director of FOD.
“Norm has an accomplished career within the agency,” said Steven Koerner, Johnson acting director. “His leadership, expertise, and dedication to the mission will undoubtably drive our continued success.”
Throughout his career, Knight has been recognized for outstanding technical achievements and leadership, receiving a Spaceflight Awareness Honoree award for STS-82. He also received several center and agency awards, including two Exceptional Achievement medals, multiple Johnson and agency group achievement awards, two Superior Accomplishment awards, an Outstanding Leadership medal, the Johnson Director’s Commendation award, and the Distinguished Service medal.
Knight earned a bachelor’s degree in aeronautical engineering from the Embry Riddle Aeronautical University in 1990.
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