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By European Space Agency
ESA Delivers: 50 years booklet
50 hallmark achievements across 50 years
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By NASA
On May 22, 2025, NASA hosted an Expedition 72 crew debrief and awards ceremony at Space Center Houston, where more than 1,000 attendees gathered to celebrate. The event recognized the achievements of the crew as well as NASA employees and partners whose dedication and support contributed to the expedition’s success. Crew members from Expedition 72 shared reflections and anecdotes from their time on the International Space Station and expressed gratitude for the opportunity to contribute to scientific research aboard the orbiting laboratory.
A group photo of participants from the Expedition 72 crew debrief and awards ceremony on May 22, 2025, at Space Center Houston’s IMAX theater. NASA/James Blair The event included four NASA astronauts:
Nick Hague, Crew-9 commander and Expedition 72 flight engineer Butch Wilmore, Boeing Starliner commander and Expedition 72 flight engineer Suni Williams, Boeing Starliner pilot and Expedition 72 commander Don Pettit, Soyuz MS-26 and Expedition 72 flight engineer The Expedition 72 crew also included Roscosmos cosmonauts Aleksandr Gorbunov, Aleksey Ovchinin, and Ivan Vagner, who were not in attendance. The cosmonauts served as Crew-9 mission specialist, Soyuz-MS commander, and Soyuz-MS flight engineer, respectively.
NASA astronaut Matt Dominick kicked off the event by striking the ceremonial bell, a tradition symbolizing the end of the mission for the crew and those that support them.
Johnson Space Center Acting Director Stephen Koerner recognized the crew’s commitment to the mission and their role in the advancement of human spaceflight. “These brave men and women make the tough yet rewarding choice to embark on long-duration missions away from their family and friends,” he said. “They do this to conduct groundbreaking research and inspire generations. Spaceflight is hard, but through togetherness we make giant leaps, going further than ever before.”
NASA astronauts (from left) Don Pettit and Butch Wilmore, Expedition 72 flight engineers, pack external research hardware which housed a variety of samples exposed to the vacuum of space such as polymers, photovoltaic devices, and more. The samples were returned to Earth to be examined to understand how space radiation, the extreme thermal environment, micrometeoroids, and more affect materials possibly benefitting the space industry. NASA NASA astronauts Nick Hague and Suni Williams, Expedition 72 Flight Engineer and Commander respectively, discuss orbital lab maintenance procedures aboard the International Space Station.NASA The Expedition 72 crew dedicated more than 1,000 combined hours to scientific research and technology demonstrations aboard the International Space Station. Their work included enhancing metal 3D printing capabilities in orbit, exploring the potential of stem cell technology for treating diseases, preparing the first wooden satellite for deployment, and collecting samples from the station’s exterior to examine whether microorganisms can survive in the harsh environment of space. They also conducted studies on plant growth and quality, investigated how fire behaves in microgravity, and advanced life support systems, all aimed at improving the health, safety, and sustainability of future space missions.
Pettit also used his spare time and surroundings aboard the station to conduct unique experiments and captivate the public with his photography. Expedition 72 captured a record 1 million photos during the mission, showcasing the unique research and views aboard the orbiting laboratory through astronauts’ eyes.
The expedition was a historic venture, with Williams and Wilmore launching aboard Boeing’s Starliner spacecraft as part of NASA’s Boeing Crew Flight Test before being integrated with the Expedition 71/72 crew and returning on NASA’s SpaceX Crew-9. While working aboard the orbiting laboratory, Williams established a new record for the most cumulative spacewalking time by a woman — 62 hours and 6 minutes — placing her fourth among the most experienced spacewalkers in history. Additionally, Expedition 72 saw the first reboost of the International Space Station by a Dragon spacecraft.
The crew participated in a panel discussion, sharing further details about the expedition including experiments conducted, favorite foods, and experiencing the Aurora Borealis. The conversation closed with a special patch presentation from Wilmore to Williams to highlight her achievement of exceeding Mach 25 in the Boeing Starliner spacecraft.
Following the panel, an award ceremony recognized team members for their efforts in supporting the mission, with recipients including the crew, NASA employees, and commercial partners.
The Expedition 72 crew poses for a portrait inside the International Space Station’s Harmony module with a cake commemorating a total of 3,000 cumulative days in space gained between the individual crew members. Front row (from left): Roscosmos cosmonaut Ivan Vagner, NASA astronaut Nick Hague, and Roscosmos cosmonaut Aleksandr Gorbunov. Back row (from left): NASA astronauts Butch Wilmore and Don Pettit, Roscosmos cosmonaut Alexey Ovchinin, and NASA astronaut Suni Williams.NASA Flight Operations Directorate Acting Director Kjell Lindgren discussed the impact of collaboration with commercial and international partners. “Your collaboration is vital not just to mission success but to the very identity of this program,” he said. “Together, we can demonstrate what global collaboration can achieve in pursuit of excellence and exploration.”
Watch below to recap the Expedition 72 crew members’ journey aboard the International Space Station and to celebrate those who helped make the mission a success.
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By NASA
Jack Kaye [NASA HQ—Associate Director for Research, Earth Science Division (ESD)] has decided to retire on April 30, 2025, following 42 years of service to NASA – see Photo 1. Most recently, Kaye served as associate director for research of the Earth Science Division (ESD) within NASA’s Science Mission Directorate (SMD). In this position, he was responsible for the research and data analysis programs for Earth System Science that addressed the broad spectrum of scientific disciplines from the stratopause to the poles to the oceans.
Photo 1. Jack Kaye [NASA HQ—Associate Director for Research, Earth Science Division (ESD)] retired from NASA on April 30, 2025, after a 42-year career. Photo credit: Public Domain A New York native, Kaye’s interest in space was piqued as a child watching early NASA manned space launches on television. He would often write to NASA to get pictures of the astronauts. In high school, he started an after school astronomy club. Despite a youthful interest in Earth science, as he explained in a 2014 “Maniac Talk” at NASA’s Goddard Space Flight Center, Kaye pursued a slightly different academic path. He obtained a Bachelor’s of Science in chemistry from Adelphi University in 1976 and a Ph.D. in theoretical physical chemistry at the California Institute of Technology in 1982. For his graduate studies, he focused on the quantum mechanics of chemical reactions with an aim toward being able to understand and calculate the activity.
Following graduate school, Kaye secured a post-doctoral position at the U.S. Naval Research Laboratory, where he studied the chemistry of Earth’s atmosphere with a focus on stratospheric ozone. It was while working in a group of meteorologists at NASA’s Goddard Space Flight Center that Kaye returned to his roots and refocused his scientific energy on studying Earth.
“NASA had a mandate to study stratospheric ozone,” Kaye said in an interview in 2009. “I got involved in looking at satellite observations and especially trying to interpret satellite observations of stratospheric composition and building models to simulate things, to look both ways, to use the models and use the data.”
Kaye has held numerous science and leadership positions at NASA. He began his career at GSFC as a researcher for the Stratospheric General Circulation and Chemistry Modeling Project (SGCCP) from 1983–1990 working on stratospheric modeling. In this role, he also worked on an Earth Observing System Interdisciplinary proposal. His first role at NASA HQ was managing as program scientist for the Atmospheric Chemistry Modeling and Analysis Program (ACMAP), as well as numerous other missions. In this role, he was a project scientist for the Atmospheric Laboratory for Applications and Science (ATLAS) series of Shuttle missions. While managing ATLAS, Kaye oversaw the science carried out by a dozen instruments from several different countries. He also managed several other Earth Science missions during this time. See the link to Kaye’s “Maniac Talk.”
Kaye entered the Senior Executive Service in 1999, where he continued to contribute to the agency by managing NASA’s Earth Science Research Program. In addition, Kaye has held temporary acting positions as deputy director of ESD and deputy chief scientist for Earth Science within SMD. Throughout his career he has focused on helping early-career investigators secure their first awards to establish their career path—see Photo 2.
Photo 2. Throughout his career, Jack Kaye has been an advocate for young scientists, helping them get established in their careers. Here, Kaye speaks with the Climate Change Research Initiative cohort at the Mary W. Jackson NASA Headquarters building in Washington, DC on August 7, 2024. The Earth Science Division’s Early Career Research Program’s Climate Change Research Initiative is a year-long STEM engagement and experiential learning opportunity for educators and students from high school to graduate level. Photo Credit: NASA/Joel Kowsky On numerous occasions, Kaye spoke to different groups emphasizing the agency’s unique role in both developing and utilizing cutting-edge technology, especially remote observations of Earth with different satellite platforms – see Photo 3. With the launch of five new NASA Earth science campaigns in 2020, Kaye stated, “These innovative investigations tackle difficult scientific questions that require detailed, targeted field observations combined with data collected by our fleet of Earth-observing satellites.”
Photo 3. Jack Kaye hands out eclipse posters and other outreach materials to attendees at Eclipse Fest 2024. Photo credit: GRC https://science.nasa.gov/science-research/earth-science/looking-back-on-looking-up-the-2024-total-solar-eclipse/ Kaye has also represented NASA in interagency and international activities and has been an active participant in the U.S. Global Change Research Program (USGCRP), where he has served for many years as NASA principal of the Subcommittee on Global Change Research. He served as NASA’s representative to the Subcommittee on Ocean Science and Technology and chaired the World Meteorological Organization Expert Team on Satellite Systems. Kaye was named an honorary member of the Asia Oceania Geoscience Society in 2015. He previously completed a six-year term as a member of the Steering Committee for the Global Climate Observing System and currently serves an ex officio member of the National Research Council’s Roundtable on Science and Technology for Sustainability and the Chemical Sciences Roundtable, as well as a member of the Roundtable on Global Science Diplomacy.
NASA has honored Kaye with numerous awards, including the Distinguished Service Medal in 2022 and the Meritorious Executive in the Senior Executive Service in 2004, 2010, and 2021. In 2024 he was awarded the NASA-USGS Pecora Individual Award honoring excellence in Earth Observation. He was named a Fellow by the American Meteorological Society in 2010 and by the American Association of the Advancement of Science (AAAS) in 2014. Kaye was elected to serve as an office of the Atmospheric and Hydrospheric Science section of the AAAS (2015–2018). AGU has recognized him on two occasions with a Citation for Excellence in Refereeing.
Over the course of his career Kaye has published more than 50 papers, contributed to numerous reports, books, and encyclopedias, and edited the book Isotope Effects in Gas-Phase Chemistry for the American Chemical Society. In addition, he has attended the Leadership for Democratic Society program at the Federal Executive Institute and the Harvard Senior Managers in Government Program at the John F. Kennedy School of Government at Harvard University.
“The vantage point of space provides a way to look at the Earth globally, with the ability to observe Earth’s interacting components of air, water, land and ice, and both naturally occurring and human-induced processes,” Kaye said in a November 2024 article published by Penn State University. “It lets us look at variability on a broad range of spatial and temporal scales and given the decades of accomplishments, has allowed us to characterize and document Earth system variability on time scales from minutes to decades.”
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By European Space Agency
Video: 00:02:46 For half a century, the European Space Agency (ESA) has been serving Europe as its space agency and inspiring its citizens. On 30 May 1975, the ESA Convention was signed by 10 founding Member States and has since now expanded to 23 Member States, three Associate Members, four Cooperating States and a Cooperation Agreement with Canada. This anniversary year provides the opportunity to reflect not only on ESA’s past achievements, but even more so on its future perspectives.
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By NASA
NASA Nearly all of NASA’s ninth class of astronaut candidates, along with two European trainees, poses for photos in the briefing room in the public affairs facility at NASA’s Johnson Space Center in Houston on July 7, 1980.
Group 9 was announced on May 29, 1980; the candidates would go on to make history in spaceflight and at NASA. For example, Charles Bolden (kneeling at far right) traveled to orbit four times aboard the space shuttle between 1986 and 1994, then became the agency’s first African American administrator in 2009. Franklin Chang-Diaz (fifth from the right, standing) was the first Hispanic American to fly in space and Jerry Ross (middle, standing in the back) was the first person to be launched into space seven times.
Image credit: NASA
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