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Honoring Black Astronauts During Black History Month 2024


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In honor of Black History Month, we recognize the contributions of Black astronauts to our nation’s space programs. Coming to NASA from a variety of backgrounds as military pilots, engineers, scientists, and physicians, these astronauts have made history-making contributions participating in space shuttle missions to perform critical tasks such as deploying and retrieving satellites, performing spacewalks, conducting science and technology research, and piloting and commanding space shuttle missions. More recently, Black astronauts have played key roles in the assembly of the International Space Station, performing numerous spacewalks and robotic operations, and conducting research as expedition crewmembers. Several have distinguished themselves as senior leaders at NASA, including as the agency’s administrator. Looking to the future, Black astronauts are among those eligible for space station as well as exploration missions in the Artemis program.

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List of Black astronauts who have flown in space. 

Robert H. Lawrence 

Robert H. Lawrence holds the honor as the first Black astronaut selected for a space program. In June 1967, the U.S. Air Force selected Lawrence as a member of the third group of aerospace research pilots for the Manned Orbiting Laboratory (MOL) Program, a joint project of the Air Force and the National Reconnaissance Office to obtain high-resolution photographic imagery of America’s Cold War adversaries. Tragically, Lawrence lost his life in an aircraft accident in December 1967, and the Air Force cancelled the MOL Program in June 1969. Two months later, seven of the MOL astronauts transferred to NASA’s astronaut corps and all flew missions on the space shuttle. It is highly likely that had Lawrence lived, NASA would have selected him in that group, and he would have flown as the first Black astronaut.  

Arnaldo Tamayo Méndez 

The first person of African heritage to fly in space, Arnaldo Tamayo Méndez of Cuba, spent eight days aboard the Soviet Salyut-6 space station in 1980. The Cuban Air Force selected Tamayo Méndez as part of the Soviet Union’s Interkosmos program that flew cosmonauts from friendly socialist countries on short visiting flights to their space stations to conduct experiments for their national space programs and academic institutions.

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Left: Portrait of U.S. Air Force astronaut Robert H. Lawrence. Middle left: Lawrence, second from left, with his fellow Group 3 Manned Orbiting Laboratory astronauts. Middle right: Portrait of Cuban cosmonaut Arnaldo Tamayo Méndez. Right: Tamayo Méndez, second from left, with his Soviet crewmates aboard the Salyut-6 space station. 

Guion S. Bluford 

In January 1978, NASA selected its largest group of astronauts up to that time, 35 pilots and mission specialists, for the space shuttle program then under development. For the first time, NASA included women and minorities in the selection group, including three Blacks, one pilot and two mission specialists. One of the three, Guion S. “Guy” Bluford, became the first Black astronaut in space as a mission specialist aboard space shuttle Challenger’s STS-8 mission in 1983. During the six-day flight that featured the first night launch and night landing of the shuttle program, the astronauts deployed a communications satellite for India and performed tests with the remote manipulator system.

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Left: Selected in 1978, NASA astronauts Ronald E. McNair, left, Guion S. “Guy” Bluford, and Frederick D. Gregory. Middle: Bluford exercises on the treadmill in the middeck of space shuttle Challenger during the STS-8 mission. Right: Bluford, right rear, with his fellow STS-8 crew members. 

Bluford returned to space in October 1985 on Challenger’s STS-61A flight, serving as a mission specialist on Spacelab D1, a scientific mission sponsored by the West German space agency DLR. The flight marked the first and so far only time that eight astronauts launched aboard a single spacecraft. During their seven days in orbit, the international crew conducted 75 experiments in a variety of scientific disciplines.

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Left: Guion S. “Guy” Bluford, left, works on an experiment during the Spacelab D1 mission. Right: Bluford, lower right, with the rest of the eight-member international STS-61A crew. 

Making his third trip into space, Bluford launched aboard space shuttle Discovery in April 1991 on STS-39, the first flight to carry five mission specialists. During the eight-day unclassified mission for the Department of Defense (DOD), Bluford and his crewmates divided into two teams working around the clock. They conducted a series of observations of Earth’s upper atmosphere and its interactions with the shuttle orbiter. The mission’s unusually high 57-degree orbital inclination allowed the astronauts to observe most of the Earth’s landmasses. Using the shuttle’s remote manipulator system, they deployed and retrieved the Shuttle Pallet Satellite-II that conducted independent observations for two days, including monitoring shuttle thruster and engine firings.

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Left: Guion S. “Guy” Bluford on the flight deck of space shuttle Discovery. Right: Bluford, at left in the back, poses for the crew photo during STS-39. 

For his fourth and final spaceflight, Bluford lifted off aboard space shuttle Discovery in December 1992. During the seven-day STS-53 flight, the final DOD-dedicated mission, Bluford and his four crewmates deployed the third Satellite Data System-2 military communications satellite and conducted several unclassified experiments. On his four missions, he logged 688 hours of spaceflight time. Bluford retired from NASA in 1993 to join the private sector.

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Left: Guion S. “Guy” Bluford photographs the Earth with a video camcorder through the shuttle’s overhead window. Right: Bluford, left, poses with his STS-53 crewmates. 

Ronald E. McNair 

Also selected in the 1978 astronaut class, physicist Ronald E. McNair made his first space flight aboard space shuttle Challenger in February 1984. During the STS-41B mission, McNair and his crewmates deployed two commercial satellites and two of the astronauts tested the Manned Maneuvering Unit during the first two untethered spacewalks. McNair, an accomplished jazz saxophonist, became the first person to play a soprano sax in space. Space limitations in the shuttle precluded flying McNair’s favorite tenor sax, so he learned to play the smaller version of the instrument for his space flight. The eight-day mission ended with the first space shuttle landing back at NASA’s Kennedy Space Center (KSC) in Florida.

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Left: NASA mission specialist Ronald E. McNair plays the soprano saxophone in the middeck of space shuttle Challenger. Right: McNair, front and center, with the rest of the STS-41B crew. 

McNair’s next flight assignment was also on Challenger, the January 1986 STS-51L mission that included the first teacher in space. Although the mission plan did not include a spacewalk, McNair trained as one of the two astronauts to conduct one in case of a contingency. Tragically, the mission ended 63 seconds after liftoff when an explosion caused by a faulty solid rocket booster O-ring, resulted in the loss of the seven-member crew and the space shuttle Challenger. McNair had planned to play a saxophone solo during the STS-51L mission for composer Jean-Michel Jarre’s album Rendez-Vous, including participation in a concert via a live feed. As a tribute to McNair, Jarre entitled the album’s sixth and last piece Last Rendez-Vous (Ron’s Piece) – ‘Challenger’.

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Left: Astronaut Ronald E. McNair dons his spacesuit for contingency spacewalk training in the Weightless Environment Training Facility at NASA’s Johnson Space Center in Houston. Middle: McNair, front row right, in the official STS-51L crew photograph. Right: McNair, third in line, walks with the rest of the STS-51L crew to the Astrovan for the ride out to the launch pad. 

Frederick D. Gregory 

The third Black member of the class of 1978, U.S. Air Force pilot Frederick D. Gregory, made his first flight into space in April 1985 aboard space shuttle Challenger. On the STS-51B mission, Gregory became the first Black astronaut to pilot a space shuttle. During the seven-day Spacelab-3 science mission, the seven crew members divided into two teams to conduct 15 experiments in five different disciplines around the clock.

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Left: Astronaut Frederick D. Gregory on the flight deck of space shuttle Challenger. Right: Gregory, left and upside down, and the rest of the STS-51B crew in the Spacelab module. 

On his second trip into space, Gregory flew as the first Black commander of a space shuttle, the STS-33 mission of Discovery in November 1989. During the five-day flight, the five-member crew completed the primary goal of the DOD mission to deploy a Magnum electronic intelligence satellite.

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Left: STS-33 Commander Frederick D. Gregory displays a banner drawn and signed by Japanese students and by the superintendent of the Department of Defense Dependents School in Japan. Middle: Gregory takes photographs through the shuttle’s aft windows. Right: Gregory, left, with his STS-33 crewmates. 

Gregory once again served as commander on his third and final spaceflight, the DOD-dedicated STS-44 mission. During the seven-day November 1991 flight aboard space shuttle Atlantis, Gregory and his five crewmates deployed a Defense Support Program satellite designed to detect nuclear detonations and missile and space launches. After his third spaceflight, Gregory served at NASA Headquarters in Washington, D.C., in several high-level management positions. He served as NASA’s first Black deputy administrator from 2002 until his retirement from the agency in 2005.

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Left: STS-44 Commander Frederick D. Gregory talks to Mission Control from the middeck of space shuttle Atlantis. Middle: Gregory, front row left, in the onboard STS-44 crew photo. Right: Official NASA portrait of Gregory as deputy NASA administrator. 

Charles F. Bolden 

Selected in 1980 in the second group of space shuttle astronauts, U.S. Marine pilot Charles F. Bolden’s first spaceflight took place in January 1986 aboard space shuttle Columbia. He served as the pilot for the six-day STS-61C mission, the last mission before the Challenger accident, to deploy a commercial communications satellite. The flight also featured the first flight of a U.S. Congressman, C. William “Bill” Nelson, whose district included KSC, and who now serves as NASA’s 14th administrator. STS-61C marked the only mission to carry two future NASA administrators.

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Left: Charles F. Bolden in the pilot’s seat of space shuttle Columbia prepares for reentry. Right: Bolden, upper right, with his fellow STS-61C crew members. 

Bolden again served as pilot during his second trip into space in April 1990, the five-day STS-31 mission to deploy the Hubble Space Telescope, the orbiting observatory that has changed our view of the Universe in its more than 30 years of surveying the skies. The space shuttle Discovery reached a then-record altitude of 380 miles to place Hubble in its operational orbit well above the Earth’s atmosphere.

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Left: STS-31 pilot Charles F. Bolden in the airlock of space shuttle Discovery assists with contingency spacewalk preparations. Right: Bolden, upper left, with his STS-31 crewmates following the deployment of the Hubble Space Telescope. 

On his third spaceflight, Bolden flew as commander of STS-45, a nine-day mission aboard space shuttle Atlantis in March 1992. The seven-member crew, divided into two teams to provide uninterrupted data gathering 24-hours a day, operated 12 instruments from 7 countries mounted in the payload bay as part of the Atmospheric Laboratory for Applications and Science-01 mission. Bolden and his crew completed 250 maneuvers to bring Atlantis into the correct positions to obtain the required measurements.

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Left: STS-45 Commander Charles F. Bolden communicates on the amateur radio. Right: Bolden, front row right, poses with the rest of the STS-45 crew on the shuttle’s flight deck. 

Bolden returned to space for a fourth time as commander of Discovery’s STS-60 mission, the first flight of the Shuttle-Mir Program. Russian cosmonaut Sergei K. Krikalev flew as a mission specialist during the nine-day space shuttle mission that included a Spacehab module to conduct a variety of scientific experiments. During his four flights, Bolden logged more than 680 hours of spaceflight time. Shortly after STS-60, he retired from NASA and returned to the U.S. Marine Corps, serving there until 2004. In 2009, President Barack H. Obama nominated, and the Senate confirmed, Bolden as NASA’s 12th and its first Black administrator, a position he held until 2017.

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Left: STS-60 Commander Charles F. Bolden prepares space shuttle Discovery for reentry. Middle: Bolden, upper right, with his STS-60 crewmates. Right: Official NASA portrait of Bolden as the agency’s first Black administrator. 

Dr. Mae C. Jemison 

Selected as an astronaut in 1987, physician Dr. Mae C. Jemison became the first Black woman to fly in space in 1992 as a mission specialist on STS-47. She and her six crewmates conducted 44 life sciences and materials sciences experiments aboard Endeavour’s Spacelab-J mission, sponsored by Japan’s National Space Development Agency (NASDA), now the Japan Aerospace Exploration Agency. Jemison retired from NASA in 1993 but continued to promote space exploration, including writing children’s books and appearing in an episode of Star Trek: The Next Generation.

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Left: Mission Specialist Dr. Mae C. Jemison in the Spacelab-J module during the STS-47 mission. Right: Jemison, right, with the rest of the STS-47 crew, poses in the Spacelab-J module. 

Dr. Bernard A. Harris 

Flight surgeon Dr. Bernard A. Harris, selected as a NASA astronaut in 1990, completed his first space flight in April 1993 as a mission specialist on STS-55, the German Spacelab D2 mission. During the 10-day Columbia flight, Harris and his crewmates split into two shifts and conducted 88 experiments sponsored by 11 nations in six scientific disciplines.

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Left: Mission Specialist Dr. Bernard A. Harris works on a materials experiment in the Spacelab-D2 module during STS-55. Right: Harris, back row left, with his STS-55 crew mates. 

Harris returned to space on his second flight, as the first Black astronaut designated as the payload commander for a mission, in charge of managing the scientific experiments conducted in the Spacehab module. Discovery’s STS-63 mission, the second Shuttle-Mir flight, included a rendezvous with the Mir space station. The February 1995 mission also featured the first woman to pilot a space shuttle, Eileen M. Collins. During the eight-day mission, Harris conducted a 4-hour, 39-minute spacewalk, the first American African astronaut to do so. Harris retired from NASA in 1996, remaining active in the fields of medicine, research, and education.

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Left: Dr. Bernard A. Harris, right, prepares for a spacewalk during the STS-63 mission. Right: Harris, front row left, with the rest of the STS-63 crew on space shuttle Discovery’s flight deck. 

Winston E. Scott 

Aeronautical engineer Winston E. Scott, selected as a NASA mission specialist astronaut in 1992, completed his first spaceflight aboard the space shuttle Endeavour in January 1996. During the nine-day STS-72 mission, Scott participated in a 6-hour 54-minute spacewalk to test tools and techniques planned for use during the assembly of the space station. The six-person crew retrieved the NASDA Space Flyer Unit, a satellite launched in March 1995 to independently conduct materials science, biology, engineering, and astronomy research. The crew also deployed and two days later retrieved the Spartan-206 free-flyer satellite that carried four technology demonstrations and science experiments.

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Left: Mission Specialist Winston E. Scott reviews rendezvous procedures on space shuttle Endeavour’s flight deck. Right: Scott, upper right, with the rest of the STS-72 crew. 

For his second and final mission, Scott returned to space in November 1997 aboard the space shuttle Columbia. During the 16-day STS-87 mission, Scott participated in two spacewalks, bringing his total spacewalking experience to more than 22 hours. The crew conducted nine experiments in materials science, combustion science, and fundamental physics as part of the fourth U.S. Microgravity Payload. Scott retired from NASA in 1999 to return to his alma mater, Florida State University, as vice-president for student affairs.

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Left: Winston E. Scott deploys a prototype free-flying experiment during a spacewalk on the STS-87 mission. Right: Scott, lower right, with his STS-87 crewmates in space shuttle Columbia’s middeck. 

Robert L. Curbeam 

Selected as a NASA astronaut in 1994, aeronautical engineer Robert L. “Beamer” Curbeam made his first trip into space aboard space shuttle Discovery in August 1997 during the STS-85 mission. With study of the Earth the main goal of the 12-day flight, the crew deployed and retrieved the Cryogenic Infrared Spectrometers and Telescopes for the Atmosphere-Shuttle Pallet Satellite-2 (CRISTA-SPAS-2) spacecraft, a joint venture between NASA and the German space agency DLR. The three telescopes and four spectrometers aboard CRISTA-SPAS-2 spent more than 200 hours of free flight observing the Earth.

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Left: Mission Specialist Robert L. “Beamer” Curbeam photographs the Earth through one of space shuttle Discovery’s overhead windows. Right: Curbeam, left, poses for the inflight photo with the STS-85 crew. 

On his second flight in space, Curbeam launched aboard space shuttle Atlantis in February 2001. As a crew member on the 13-day STS-98 mission, Curbeam participated in the installation of the Destiny U.S. Laboratory module onto the space station, becoming the first Black astronaut to visit the orbital facility. He conducted three spacewalks totaling nearly 20 hours to complete external connections between the space station and Destiny.

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Left: Robert L. “Beamer” Curbeam during the second STS-98 spacewalk to install the Destiny U.S. Laboratory module onto the space station. Right: Curbeam, right, with the STS-98 and Expedition 1 crews. 

On his third and final flight, Curbeam returned to space, and to the space station, in December 2006, as part of the STS-116 crew aboard space shuttle Discovery. The 13-day flight marked the first time that two Black astronauts flew on the same mission. The crew installed the P5 truss segment on the ISS, with Curbeam completing four spacewalks to help accomplish the task. With his previous spacewalking experience, Curbeam holds the record among Black astronauts for the most number of spacewalks, seven, and the most spacewalking time, 45 hours 34 minutes. Curbeam retired from NASA in 2007, remaining active in space-related activities.

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Left: Robert L. “Beamer” Curbeam during the second STS-116 spacewalk to install the P5 truss segment onto the space station. Right: Curbeam, middle row at right, with the STS-116 and Expedition 14 crews. 

Michael P. Anderson 

Physicist Michael P. Anderson joined NASA’s astronaut corps in 1994 and made his first flight in space in January 1998 aboard the space shuttle Endeavour. As a mission specialist aboard STS-89, the eighth mission to dock with the space station Mir, Anderson was the first and only Black astronaut to visit the Russian orbital facility. He also conducted scientific experiments in the double Spacehab logistics module during the 9-day mission.

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Left: Michael P. Anderson works on an experiment in the middeck of space shuttle Endeavour. Right: Anderson, lower right, with the STS-89 and Mir Expedition 24 crews, poses for the inflight crew photo in Mir’s base block module. 

Anderson’s next spaceflight came in January 2003, the 16-day STS-107 research mission aboard space shuttle Columbia. With Anderson serving as payload commander, the seven-member crew split into two teams to work around the clock on more than 80 experiments in the fields of Earth and space science, advanced technology, and astronaut health and safety. Tragically, about 16 minutes before landing at KSC, space shuttle Columbia broke apart, with loss of the vehicle and the crew. Investigators traced the cause to a piece of foam that fell off the external tank during launch and struck Columbia’s left wing, creating an opening through which superheated gases during reentry impinged on the orbiter’s airframe, causing the vehicle to disintegrate.

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Left: Michael P. Anderson works on a combustion experiment in the Spacehab Double Research Module during the STS-107 mission. Right: Anderson, at upper right, with the rest of the STS-107 crew, poses for the inflight photograph in the Spacehab module. 

Stephanie D. Wilson 

Selected by NASA as an astronaut in 1996, aerospace engineer Stephanie D. Wilson completed her first mission in July 2006 aboard the space shuttle Discovery. The 13-day STS-121 mission, the second return to flight mission after the Columbia accident, resumed outfitting of the space station, including returning its crew size to three. Wilson handled much of the robotics operations, including transferring the Multi-Purpose Logistics Module (MPLM) Leonardo from the shuttle’s cargo bay to the ISS and back again. The MPLM delivered the first of three scientific refrigerator/freezers and other facilities to the space station to expand its research capabilities.

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Left: Stephanie D. Wilson at the controls of the space station’s robotic work station in the Destiny module. Right: Wilson, middle row left, with the STS-121 and Expedition 13 crews. 

On her second spaceflight in October 2007, Wilson returned to the space station, this time on the STS-120 mission of space shuttle Discovery. During the 15-day flight, the crew delivered the Harmony Node 2 module to the station, with Wilson robotically assisting in the installation of the new element that enabled the subsequent addition of the European and Japanese research modules.

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Left: Stephanie D. Wilson poses in front of the robotic workstation in the space station’s Destiny module. Right: Wilson, at left, poses with the STS-120 and Expedition 16 crews. 

In April 2010, Wilson made her third trip into space and her third visit to the space station. During the 15-day STS-131 mission, the MPLM Leonardo in space shuttle Discovery’s cargo bay delivered three research facilities and other cargo to the orbiting laboratory, with Wilson using the station’s robotic arm to transfer the MPLM to and from the station. During STS-131, for the first time four women worked in space at the same time, three members of the shuttle crew and the fourth a member of the Expedition 23 crew. To date, Wilson has accumulated 43 days of spaceflight time over the course of her three missions.  In January 2024, NASA assigned Wilson to the Crew 9 mission for a long-duration flight aboard the space station later in the year.

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Left: Stephanie D. Wilson poses in front of one of the two windows of the space station’s Kibo module.  Middle: Wilson, left, posing in the Cupola with three other women astronauts during the STS-131 mission, the first time that four women flew in space at the same time. Right: Wilson, front row second from right, poses with the STS-131 and Expedition 23 crews in Kibo.

Joan E. Higginbotham 

Selected in the astronaut class of 1996, electrical engineer Joan E. Higginbotham completed her single spaceflight in December 2006, the 13-day STS-116 mission aboard space shuttle Discovery. With Curbeam on the same crew, this marked the first time that two Black astronauts flew in space at the same time. Higginbotham operated the space station’s remote manipulator system to assist in the installation of the P5 truss segment to the facility. She retired from NASA in 2007 to pursue a career in the private sector.

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Left: Joan E. Higginbotham operates the controls of the International Space Station’s robotic work station in the Destiny module. Right: Higginbotham, front row to right of center, in the Destiny module with the STS-116 and Expedition 14 crews, the first time that two Black astronauts flew in space at the same time. 

B. Alvin Drew 

After his selection by NASA as an astronaut in 2000, physicist and aeronautical engineer B. Alvin Drew made his first spaceflight aboard space shuttle Endeavour in August 2007. During the 13-day STS-118 mission, Drew and his six crewmates installed the S5 truss segment on the space station, transferred 5,000 pounds of science experiments and other logistics from the single Spacehab module to the station, and returned 4,000 pounds of unneeded hardware to Earth. 

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Left: B. Alvin Drew transfers equipment into the space station. Right: Drew, middle row at left, with the STS-118 and Expedition 15 crews posing in the Destiny module. 

On his second and final trip into space in February 2011, Drew returned to the space station, this time on STS-133, the final flight of space shuttle Discovery. During the 13-day mission, Drew carried out two spacewalks totaling nearly 13 hours to complete a series of maintenance tasks on the station’s exterior.  Engineers on the ground converted the MPLM Leonardo into a Permanent Multipurpose Module (PMM) to provide additional storage capacity for the station. Drew and his five crewmates installed the PMM on the orbital facility. They also added a third platform for holding external payloads onto the station’s truss segment, and brought the Robonaut-2 humanoid robot to the orbiting laboratory. Drew currently serves as the NASA liaison to the Department of Defense at NASA Headquarters in Washington, D.C. 

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Left: B. Alvin Drew operates the space station’s robotic work station in the space station’s Destiny module. Right: Drew, front row at left, with his STS-133 and Expedition 26 crewmates. 

Leland D. Melvin 

Chemist and former National Football League player Leland D. Melvin, selected by NASA as an astronaut in 1998, made his first spaceflight aboard the space shuttle Atlantis in February 2008, the 13-day STS-122 mission. As a mission specialist, Melvin participated in the robotic operations to install the European Space Agency’s Columbus laboratory module on the space station. 

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Left: Leland D. Melvin operates the space station’s robotic work station in the Destiny module. Right: Melvin, at center in rear, during mealtime with his STS-122 and Expedition 16 crewmates in the Zvezda service module. 

Melvin returned to space and to the space station in November 2009 aboard Atlantis. During the 11-day STS-129 mission, the crew installed two external carriers for payloads onto the station’s truss, with Melvin operating the shuttle’s robotic arm. After his second and final spaceflight, NASA managers recognized Melvin’s passion for engaging with students of all ages and named him associate administrator for the Office of Education at NASA Headquarters in 2010. He served in that position until his retirement from the agency in 2014. Melvin continues to promote human spaceflight and education.

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Left: Astronaut Leland D. Melvin reflected in the lid of the Lada greenhouse in the Zvezda service module. Middle: Melvin, left of center, poses with his STS-129 and Expedition 21 crewmates. Right: Official photograph of Melvin as NASA associate administrator for the Office of Education. 

Dr. Robert L. Satcher 

Selected by NASA in 2004 as an astronaut, orthopedic surgeon Dr. Robert L. “Bobby” Satcher flew his only space mission in November 2009, an 11-day flight aboard space shuttle Atlantis. As a mission specialist on the STS-129 crew, Satcher participated in the installation of two external payload carriers onto the space station’s truss, including conducting two spacewalks totaling more than 12 hours. He retired from NASA in 2011 to join The University of Texas M.D. Anderson Cancer Center’s orthopedic oncology department. 

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Left: Astronaut Dr. Robert L. “Bobby” Satcher floats in the space station’s Destiny module. Right: Satcher, second row at right, with his STS-129 and Expedition 21 crewmates. 

Victor J. Glover 

NASA selected U.S. Navy test pilot Victor J. Glover as an astronaut in 2013. He launched in November 2020 aboard Space Exploration Technology Corporation’s (SpaceX) commercial Crew Dragon Resilience spacecraft. The Crew 1 mission marked the first use of the Crew Dragon for a space station crew rotation. Glover became the first Black astronaut to join a long-duration expedition crew aboard the station, and his arrival with his three crewmates marked the first time the facility’s resident crew size increased to seven people, significantly increasing the crew time available to conduct research. Glover logged 167 days in space during his mission as a member of Expedition 64 and 65. On April 3, 2023, NASA named Glover as the pilot for Artemis II, the first crewed mission on NASA’s path to establishing a long-term presence at the Moon for science and exploration. 

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Left: Astronaut Victor J. Glover conducts a spacewalk during Expedition 64. Right: Glover, left, with his Expedition 64 crewmates in the Cupola module.  

Sian H. Proctor 

Geologist Sian H. Proctor flew as one of the four crew members on the all-civilian Inspiration4 mission aboard the SpaceX Crew Dragon capsule Resilience. Proctor, the first Black woman pilot in space, carried with her a fragment of the Canyon Diablo meteorite that 50,000 years ago created the Barringer Crater in Arizona, also known as Meteor Crater. She also conducted experiments during the three-day flight in September 2021. 

proctor_w_meteorite_on_inspiration4_sep_2021_spacex proctor_w_inspiration4_crew_on_orbit_sep_2021_spacex

Left: Sian H. Proctor with a fragment of the Canyon Diablo meteorite she flew to space aboard the all-civilian Inspiration4 mission. Right: Proctor, right, with her fellow Inspiration4 crewmates. 

Jessica A. Watkins 

Jessica A. Watkins, selected for NASA’s 2017 astronaut class, launched aboard Crew Dragon Freedom as part of the Crew 4 mission in April 2022, becoming the first Black woman to join a long-duration mission. Watkins, the first NASA geologist to fly in space since Apollo 17’s Harrison H. “Jack” Schmitt in 1972, completed a 171-day mission aboard the space station, returning to Earth in October 2022. During her stay as a member of Expeditions 67 and 68, she conducted dozens of experiments. During the handover between Crew 4 and Crew 5, for the first time in history, five women worked in space at the same time, four aboard the International Space Station and one aboard China’s Tiangong space station. Watkins remains eligible for future mission assignments.  

watkins_melfi_exp_68 watkins_birthday_exp_67_may_14_2022

Left: Astronaut Jessica A. Watkins places biological samples into the Minus Eighty-degree Laboratory Freezer for ISS during Expedition 68. Right: Expedition 67 crew members help Watkins, center, celebrate her birthday aboard the space station. 

Jeanette J. Epps 

Selected as an astronaut in 2009, Jeanette J. Epps will make her first trip into space as a member of Crew 8, scheduled for launch in February 2024 aboard a SpaceX Crew Dragon. Epps and her three crewmates will join the Expedition 70 and 71 crews for a planned six-month mission aboard the space station to conduct more than 200 experiments. 

.black-history-month-2024-83-epps-crew-8- black-history-month-2024-84-epps-crew-8-

Left: NASA astronaut Jeanette J. Epps, right, poses with her Crew 8 crewmates for the official photograph. Right: Epps, left, and her Crew 8 crewmates during a training session. 

To be continued… 

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      Learn more about IXPE’s ongoing mission here:
      https://www.nasa.gov/ixpe
      Elizabeth Landau
      NASA Headquarters
      elizabeth.r.landau@nasa.gov
      202-358-0845
      Lane Figueroa
      NASA’s Marshall Space Flight Center
      256-544-0034
      lane.e.figueroa@nasa.gov
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      This artist’s illustration shows a disk of material (red, orange, and yellow) that was created after a supermassive black hole (depicted on the right) tore apart a star through intense tidal forces.X-ray: NASA/CXC/Queen’s Univ. Belfast/M. Nicholl et al.; Optical/IR: PanSTARRS, NSF/Legacy Survey/SDSS; Illustration: Soheb Mandhai / The Astro Phoenix; Image Processing: NASA/CXC/SAO/N. Wolk This artist’s illustration shows a disk of material (red, orange, and yellow) that was created after a supermassive black hole (depicted on the right) tore apart a star through intense tidal forces. Over the course of a few years, this disk expanded outward until it intersected with another object – either a star or a small black hole – that is also in orbit around the giant black hole. Each time this object crashes into the disk, it sends out a burst of X-rays detected by Chandra. The inset shows Chandra data (purple) and an optical image of the source from Pan-STARRS (red, green, and blue).
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      The study of X-ray emission from astronomical objects reveals secrets about the universe at the largest and smallest spatial scales. Celestial X-rays are produced by black holes consuming nearby stars, emitted by the million-degree gas that traces the structure between galaxies, and can be used to predict whether stars may be able to host planets hospitable to life. X-ray observations have shown that most of the visible matter in the universe exists as hot gas between galaxies and have conclusively demonstrated that the presence of “dark matter” is needed to explain galaxy cluster dynamics, that dark matter dominates the mass of galaxy clusters, and that it governs the expansion of the cosmos.
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      At NASA’s Marshall Space Flight Center, a team of scientists and engineers is building, testing, and flying innovative optics that bring the universe’s X-ray mysteries into sharper focus.
      Unlike optical telescopes that create images by reflecting or refracting light at near-90-degree angles (normal incidence), focusing X-ray optics must be designed to reflect light at very small angles (grazing incidence). At normal incidence, X-rays are either absorbed by the surface of a mirror or penetrate it entirely. However, at grazing angles of incidence, X-rays reflect very efficiently due to an effect called total external reflection. In grazing incidence, X-rays reflect off the surface of a mirror like rocks skipping on the surface of a pond.
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      Schematic of a full-shell Wolter-I X-ray optic mirror module assembly with five concentrically nested mirror shells. Parallel rays of light enter from the left, reflect twice off the reflective inside surface of the shell (first off the parabolic segment and then off the hyperbolic segment), and converge at the focal plane.NASA Marshall has been building and flying lightweight, full-shell, focusing X-ray optics for over three decades, always meeting or exceeding angular resolution and effective area requirements. Marshall utilizes an electroformed nickel replication technique to make these thin full-shell X-ray optics from nickel alloy.
      X-ray optics development at Marshall began in the early 1990s with the fabrication of optics to support NASA’s Advanced X-ray Astrophysics Facility (AXAF-S) and then continued via the Constellation-X technology development programs. In 2001, Marshall launched a balloon payload that included two modules each with three mirrors, which produced the first focused hard X-ray images of an astrophysical source by imaging Cygnus X-1, GRS 1915, and the Crab Nebula. This initial effort resulted in several follow-up missions over the next 12 years and became known as the High Energy Replicated Optics (HERO) balloon program.
      In 2012, the first of four sounding rocket flights of the Focusing Optics X-ray Solar Imager (FOXSI) flew with Marshall optics onboard, producing the first focused images of the Sun at energies greater than 5 keV. In 2019 the Astronomical Roentgen Telescope X-ray Concentrator (ART-XC) instrument on the Spectr-Roentgen-Gamma Mission launched with seven Marshall-fabricated X-ray MMAs, each containing 28 mirror shells. ART-XC is currently mapping the sky in the 4-30 keV hard X-ray energy range, studying exotic objects like neutron stars in our own galaxy as well as active galactic nuclei, which are spread across the visible universe. In 2021, the Imaging X-ray Polarimetry Explorer (IXPE), flew and is now performing extraordinary science with a Marshall-led team using three, 24-shell MMAs that were fabricated and calibrated in-house.
      Most recently, in 2024, the fourth FOXSI sounding rocket campaign launched with a high-resolution Marshall MMA. The optics achieved 9.5 arcsecond HPD angular resolution during pre-flight test with an expected 7 arcsecond HPD in gravity-free flight, making this the highest angular resolution flight observation made with a nickel-replicated X-ray optic. Currently Marshall is fabricating an MMA for the Rocket Experiment Demonstration of a Soft X-ray (REDSoX) polarimeter, a sounding rocket mission that will fly a novel soft X-ray polarimeter instrument to observe active galactic nuclei. The REDSoX MMA optic will be 444 mm in diameter, which will make it the largest MMA ever produced by MSFC and the second largest replicated nickel X-ray optic in the world.
      The ultimate performance of an X-ray optic is determined by errors in the shape, position, and roughness of the optical surface. To push the performance of X-ray optics toward even higher angular resolution and achieve more ambitious science goals, Marshall is currently engaged in a fundamental research and development effort to improve all aspects of full-shell optics fabrication.
      Scientists Wayne Baumgartner, left, crouched, and Nick Thomas, left, standing, calibrate an IXPE MMA in the Marshall 100 m Beamline. Scientist Stephen Bongiorno, right, applies epoxy to an IXPE shell during MMA assembly.NASA Given that these optics are made with the electroformed nickel replication technique, the fabrication process begins with creation of a replication master, called the mandrel, which is a negative of the desired optical surface. First, the mandrel is figured and polished to specification, then a thin layer of nickel alloy is electroformed onto the mandrel surface. Next, the nickel alloy layer is removed to produce a replicated optical shell, and finally the thin shell is attached to a stiff holding structure for use.
      Each step in this process imparts some degree of error into the final replicated shell. Research and development efforts at Marshall are currently concentrating on reducing distortion induced during the electroforming metal deposition and release steps. Electroforming-induced distortion is caused by material stress built into the electroformed material as it deposits onto the mandrel. Decreasing release-induced distortion is a matter of reducing adhesion strength between the shell and mandrel, increasing strength of the shell material to prevent yielding, and reducing point defects in the release layer.
      Additionally, verifying the performance of these advanced optics requires world-class test facilities. The basic premise of testing an optic designed for X-ray astrophysics is to place a small, bright X-ray source far away from the optic. If the angular size of the source, as viewed from the optic, is smaller than the angular resolution of the optic, the source is effectively simulating X-ray starlight. Due to the absorption of X-rays by air, the entire test facility light path must be placed inside a vacuum chamber.
      At the center, a group of scientists and engineers operate the Marshall 100-meter X-ray beamline, a world-class end-to-end test facility for flight and laboratory X-ray optics, instruments, and telescopes. As per the name, it consists of a 100-meter-long vacuum tube with an 8-meter-long, 3-meter-diameter instrument chamber and a variety of X-ray sources ranging from 0.25 – 114 keV. Across the street sits the X-Ray and Cryogenic Facility (XRCF), a 527-meter-long beamline with an 18-meter-long, 6-meter-diameter instrument chamber. These facilities are available for the scientific community to use and highlight the comprehensive optics development and test capability that Marshall is known for.
      Within the X-ray astrophysics community there exist a variety of angular resolution and effective area needs for focusing optics. Given its storied history in X-ray optics, Marshall is uniquely poised to fulfill requirements for large or small, medium- or high-angular-resolution X-ray optics. To help guide technology development, the astrophysics community convenes once per decade to produce a decadal survey. The need for high-angular-resolution and high-throughput X-ray optics is strongly endorsed by the National Academies of Sciences, Engineering, and Medicine report, Pathways to Discovery in Astronomy and Astrophysics for the 2020s.In pursuit of this goal, Marshall is continuing to advance the state of the art in full-shell optics. This work will enable the extraordinary mysteries of the X-ray universe to be revealed.
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      Hubble, New Horizons Team Up for a Simultaneous Look at Uranus
      NASA’s Hubble Space Telescope and New Horizons spacecraft simultaneously set their sights on Uranus recently, allowing scientists to make a direct comparison of the planet from two very different viewpoints. The results inform future plans to study like types of planets around other stars.
      NASA’s Hubble Space Telescope (left) and NASA’s New Horizon’s spacecraft (right) image the planet Uranus.NASA, ESA, STScI, Samantha Hasler (MIT), Amy Simon (NASA-GSFC), New Horizons Planetary Science Theme Team; Image Processing: Joseph DePasquale (STScI), Joseph Olmsted (STScI) Astronomers used Uranus as a proxy for similar planets beyond our solar system, known as exoplanets, comparing high-resolution images from Hubble to the more-distant view from New Horizons. This combined perspective will help scientists learn more about what to expect while imaging planets around other stars with future telescopes.
      “While we expected Uranus to appear differently in each filter of the observations, we found that Uranus was actually dimmer than predicted in the New Horizons data taken from a different viewpoint,” said lead author Samantha Hasler of the Massachusetts Institute of Technology in Cambridge and New Horizons science team collaborator.
      Direct imaging of exoplanets is a key technique for learning about their potential habitability, and offers new clues to the origin and formation of our own solar system. Astronomers use both direct imaging and spectroscopy to collect light from the observed planet and compare its brightness at different wavelengths. However, imaging exoplanets is a notoriously difficult process because they’re so far away. Their images are mere pinpoints and so are not as detailed as the close-up views that we have of worlds orbiting our Sun. Researchers can also only directly image exoplanets at “partial phases,” when only a portion of the planet is illuminated by their star as seen from Earth.
      Uranus was an ideal target as a test for understanding future distant observations of exoplanets by other telescopes for a few reasons. First, many known exoplanets are also gas giants similar in nature. Also, at the time of the observations, New Horizons was on the far side of Uranus, 6.5 billion miles away, allowing its twilight crescent to be studied – something that cannot be done from Earth. At that distance, the New Horizons view of the planet was just several pixels in its color camera, called the Multispectral Visible Imaging Camera.
      On the other hand, Hubble, with its high resolution, and in its low-Earth orbit 1.7 billion miles away from Uranus, was able to see atmospheric features such as clouds and storms on the day side of the gaseous world.
      “Uranus appears as just a small dot on the New Horizons observations, similar to the dots seen of directly imaged exoplanets from observatories like Webb or ground-based observatories,” Hasler said. “Hubble provides context for what the atmosphere is doing when it was observed with New Horizons.”
      The gas giant planets in our solar system have dynamic and variable atmospheres with changing cloud cover. How common is this among exoplanets? By knowing the details of what the clouds on Uranus looked like from Hubble, researchers can verify what is interpreted from the New Horizons data. In the case of Uranus, both Hubble and New Horizons saw that the brightness did not vary as the planet rotated, which indicates that the cloud features were not changing with the planet’s rotation.
      In this image, two three-dimensional shapes, top, of Uranus are compared to the actual views of the planet from NASA’s Hubble Space Telescope, bottom left, and NASA’s New Horizon’s spacecraft, bottom right. Comparing high-resolution images from Hubble to the smaller view from New Horizons offers a combined perspective that will help researchers learn more about what to expect while imaging planets around other stars with future observatories. NASA, ESA, STScI, Samantha Hasler (MIT), Amy Simon (NASA-GSFC), New Horizons Planetary Science Theme Team; Image Processing: Joseph DePasquale (STScI), Joseph Olmsted (STScI) However, the importance of the detection by New Horizons has to do with how the planet reflects light at a different phase than what Hubble, or other observatories on or near Earth, can see. New Horizons showed that exoplanets may be dimmer than predicted at partial and high phase angles, and that the atmosphere reflects light differently at partial phase.
      NASA has two major upcoming observatories in the works to advance studies of exoplanet atmospheres and potential habitability.
      “These landmark New Horizons studies of Uranus from a vantage point unobservable by any other means add to the mission’s treasure trove of new scientific knowledge, and have, like many other datasets obtained in the mission, yielded surprising new insights into the worlds of our solar system,” added New Horizons principal investigator Alan Stern of the Southwest Research Institute.
      NASA’s upcoming Nancy Grace Roman Space Telescope, set to launch by 2027, will use a coronagraph to block out a star’s light to directly see gas giant exoplanets. NASA’s Habitable Worlds Observatory, in an early planning phase, will be the first telescope designed specifically to search for atmospheric biosignatures on Earth-sized, rocky planets orbiting other stars.
      “Studying how known benchmarks like Uranus appear in distant imaging can help us have more robust expectations when preparing for these future missions,” concluded Hasler. “And that will be critical to our success.”
      Launched in January 2006, New Horizons made the historic flyby of Pluto and its moons in July 2015, before giving humankind its first close-up look at one of these planetary building block and Kuiper Belt object, Arrokoth, in January 2019. New Horizons is now in its second extended mission, studying distant Kuiper Belt objects, characterizing the outer heliosphere of the Sun, and making important astrophysical observations from its unmatched vantage point in distant regions of the solar system.
      The Hubble Space Telescope has been operating for over three decades and continues to make ground-breaking discoveries that shape our fundamental understanding of the universe. Hubble is a project of international cooperation between NASA and ESA (European Space Agency). NASA’s Goddard Space Flight Center manages the telescope and mission operations. Lockheed Martin Space, based in Denver, Colorado, also supports mission operations at Goddard. The Space Telescope Science Institute in Baltimore, Maryland, which is operated by the Association of Universities for Research in Astronomy, conducts Hubble science operations for NASA.
      The Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, built and operates the New Horizons spacecraft and manages the mission for NASA’s Science Mission Directorate. Southwest Research Institute, based in San Antonio and Boulder, Colorado, directs the mission via Principal Investigator Alan Stern and leads the science team, payload operations and encounter science planning. New Horizons is part of NASA’s New Frontiers program, managed by NASA’s Marshall Space Flight Center.
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      Crew-8 Awaits Splashdown; Expedition 72 Stays Focused on Science
      Four International Space Station crew members continue waiting for their departure date as mission managers monitor weather conditions off the coast of Florida. The rest of the Expedition 72 crew stayed focused Oct. 14 on space biology and lab maintenance aboard the orbital outpost.
      The SpaceX Dragon Freedom spacecraft is pictured through the window of the SpaceX Dragon Endeavour spacecraft with a vivid green and pink aurora below.NASA NASA and SpaceX mission managers are watching unfavorable weather conditions off the Florida coast right now for the splashdown of the SpaceX Crew-8 mission with NASA astronauts Matthew Dominick, Mike Barratt, and Jeanette Epps, and Roscosmos cosmonaut Alexander Grebenkin. The homebound quartet spent Oct. 14 mostly relaxing while also continuing departure preps. Mission teams are currently targeting Dragon Endeavour’s undocking for no earlier than 2:05 a.m. CDT on Oct. 18. The Crew-8 foursome is in the seventh month of their space research mission that began on March 3.
      The other seven orbital residents will stay aboard the orbital outpost until early 2025. NASA astronaut Don Pettit is scheduled to return to Earth first in February with Roscosmos cosmonauts Alexey Ovchinin and Ivan Vagner aboard the Soyuz MS-26 crew ship. Next, station Commander Suni Williams and flight engineer Butch Wilmore are targeted to return home aboard SpaceX Dragon Freedom with SpaceX Crew-9 Commander Nick Hague, all three NASA astronauts, and Roscosmos cosmonaut Aleksandr Gorbunov.
      Williams had a light duty day Oct. 14 disassembling life support gear before working out for a cardio fitness study. Wilmore installed a new oxygen recharge tank and began transferring oxygen into tanks located in the Quest airlock. Hague collected his blood and saliva samples for incubation and cold stowage to learn how microgravity affects cellular immunity. Pettit also had a light duty day servicing biology hardware including the Cell Biology Experiment Facility, a research incubator with an artificial gravity generator, and the BioLab, which supports observations of microbes, cells, tissue cultures and more.
      The Huntsville Operations Support Center (HOSC) at NASA’s Marshall Space Flight Center provides engineering and mission operations support for the space station, the CCP, and Artemis missions, as well as science and technology demonstration missions. The Payload Operations Integration Center within HOSC operates, plans, and coordinates the science experiments onboard the space station 365 days a year, 24 hours a day.
      The first flight of Sierra Space’s Dream Chaser to the space station is now scheduled for no earlier than May 2025 to allow for completion of spacecraft testing. Dream Chaser, which will launch atop a ULA (United Launch Alliance) Vulcan rocket and later glide to a runway landing at NASA’s Kennedy Space Center, will carry cargo to the orbiting laboratory and stay on board for approximately 45 days on its first mission.
      Learn more about station activities by following the space station blog.
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    • By European Space Agency
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    • By NASA
      Researchers verified that 3D micro-computed tomography scans can map the orientation of plant roots in space and used the method to demonstrate that carrots grown in actual and simulated microgravity both had random root orientation. These findings suggest that simulated microgravity offers a reliable and more affordable tool for studying plant adaptation to spaceflight.

      MULTI-TROP evaluated the role of gravity and other factors on plant growth. Plant roots grow downward in response to gravity on Earth, but in random directions in microgravity, which is a challenge for developing plant growth facilities for space. Results from this investigation could help address this challenge, advancing efforts to grow plants for food and other uses on future space missions as well as improving plant cultivation on Earth.
      Preflight image of the BIOKON facility used to grow carrots for MULTI-TROP. Kayser Italia For climate model simulations, researchers developed four parameters of electrical discharges from thunderclouds that produce visual emissions known as Blue LUminous Events or BLUEs. BLUEs are thought to affect regional atmospheric chemistry and climate. The parameters reported by this study could inform models that help test the global and regional effects of thunderstorm corona discharges, including how their geographic distribution and global occurrence rate will change as the atmosphere warms.

      ASIM, an investigation from ESA (European Space Agency), studies high-altitude lightning in thunderstorms and the role it plays in Earth’s atmosphere and climate. Scientists need to understand processes occurring in Earth’s upper atmosphere to determine how lightning is connected to Earth’s climate and weather so they can develop better atmospheric models to guide weather and climate predictions.
      Lightning in a thunderstorm off the coast of Africa as seen from the International Space Station. NASA/Matthew Dominick A technique to detect sounds generated by the inner ear could be used as a non-invasive tool for monitoring changes in fluid pressure in the head during spaceflight. Increased fluid pressure in the head that occurs in microgravity can cause visual impairment and may also affect the middle and inner ear. Insight into fluid pressure changes could help scientists develop ways to protect astronauts from these effects.

      The ESA and ASI investigation Acoustic Diagnostics monitored hearing function in astronauts on long-term missions using otoacoustic emissions (sounds generated by the inner ear in response to specific tones). Researchers compared these measurements before and during flight to indirectly detect changes in fluid pressure in the head. Different body position and fit of the ear probes affected results of the test and the authors note that these issues need to be addressed.
      NASA astronaut Drew Morgan participates in a hearing test for the Acoustic Diagnostics investigation. ESA (European Space Agency)/Luca ParmitanoView the full article
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