DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

DUAL ION SPECTROMETER (DIS) ENGINEERING TEST UNIT (ETU) AT THE LOW ENERGY ELECTRON AND ION FACILITY (LEEIF), NSSTC

Two stars shine through the centre of a ring of cascading dust in this image taken by the NASA/ESA Hubble Space Telescope. The star system is named DI Cha, and while only two stars are apparent, it is actually a quadruple system containing two sets of binary stars. As this is a relatively young star system it is surrounded by dust. The young stars are moulding the dust into a wispy wrap. The host of this alluring interaction between dust and star is the Chamaeleon I dark cloud — one of three such clouds that comprise a large star-forming region known as the Chamaeleon Complex. DI Cha's juvenility is not remarkable within this region. In fact, the entire system is among not only the youngest but also the closest collections of newly formed stars to be found and so provides an ideal target for studies of star formation.

jsc2021e009423 (3/2/2021) --- A preflight view of the Measurement Unit (left panel) and Battery Pack (right panel) of the Wearable Monitoring Facility. Image courtesy of Marco Di Rienzo ©

jsc2021e009422 (3/2/2021) --- A preflight view of the MagIC-Space payload. A=Thermometer probe; B= Battery Pack; C= Measurement Unit; D=Vest of the Wearable Monitoring Facility. Image courtesy of Marco Di Rienzo ©

Simonetta Di Pippo, Director of the United Nations Office for Outer Space Affairs, is seen during a special session titled “Planetary Protection for the Future: Science, Exploration, and Commerce” at the 70th International Astronautical Congress, Thursday, Oct. 24, 2019, at the Walter E. Washington Convention Center in Washington. Photo Credit: (NASA/Joel Kowsky)

Ms. Simonetta Di Pippo, Director, United Nations Office of Outer Space Affairs and NASA Administrator Bill Nelson pose for a photograph prior to a meeting during the Space Symposium, Wednesday, Aug. 25, 2021, in Colorado Springs, Colorado. Photo Credit: (NASA/Bill Ingalls)

jsc2022e031232 (4/26/2022) --- A preflight view of differentiating neuron-like cell cultures with a dense network of neurites for intercellular interaction. The PROtection MEdiated by antioxidant nanoTEchnOlogy against neuronal damage in space (PROMETEO) (Antioxidant Protection) investigation proposes the use of biocompatible and biodegradable polydopamine-based nanoparticles to provide antioxidant protection to neurons undergoing exposure to altered gravity and cosmic radiation. Image courtesy of Istituto Italiano di Tecnologia.

Walker made the first NASA-piloted X-15 flight March 25, 1960, and flew the aircraft 24 times, achieving its highest altitude (354,300 ft.) Aug. 22, 1963. He died piloting a F-104 that was caught up in a vortex of the XB-70.

This false-color image from three of NASA Great Observatories provides one example of a star that died in a fiery supernova blast. Called Cassiopeia A, this supernova remnant is located 10,000 light-years away in the constellation Cassiopeia.

NASA Chief Scientist Jim Green, left, Lisa Pratt, NASA's Planetary Protection Officer, Michael Meyer, Lead Scientist for NASA's Mars Exploration Program, Dan Hendrickson, Vice President of Business Development at Astrobotic Technology, Kyle Acierno, Vice President of Global Sales and Strategy at ispace, and Simonetta Di Pippo, Director of the United Nations Office for Outer Space Affairs, right, are seen during a special session titled “Planetary Protection for the Future: Science, Exploration, and Commerce” at the 70th International Astronautical Congress, Thursday, Oct. 24, 2019, at the Walter E. Washington Convention Center in Washington. Photo Credit: (NASA/Joel Kowsky)

KENNEDY SPACE CENTER, FLA. - The pitcher with the Brevard Manatees, a minor league baseball team in Central Florida, starts the game on a night that hosted KSC employees. Before the game, attendees offered a moment of silence to honor the STS-107 crew and two recovery workers who died in a helicopter crash.

KENNEDY SPACE CENTER, FLA. - KSC employees enjoy a baseball game at Manatees Stadium, home of the Brevard Manatees, a minor league baseball team in Central Florida. The team hosted KSC employees for the game, which included a moment of silence to honor the STS-107 crew and two recovery workers who died in a helicopter crash.

KENNEDY SPACE CENTER, FLA. - The Brevard Manatees, a minor league baseball team in Central Florida, hosts KSC employees at a ballgame at Manatees Stadium. Before the game, attendees offered a moment of silence to honor the STS-107 crew and two recovery workers who died in a helicopter crash.

KENNEDY SPACE CENTER, FLA. - KSC employees enjoy a baseball game at Manatees Stadium, home of the Brevard Manatees, a minor league baseball team in Central Florida. The team hosted the employees for the game, which included a moment of silence to honor the STS-107 crew and two recovery workers who died in a helicopter crash.

KENNEDY SPACE CENTER, FLA. - There is action on the baseball diamond during a game at Manatees Stadium, home of the Brevard Manatees, a minor league baseball team in Central Florida. The team hosted KSC employees for the game, which included a moment of silence to honor the STS-107 crew and two recovery workers who died in a helicopter crash.

Portrait of Floyd L. Thompson NASA Langley Center Director from 1960 to 1968. Died in 1976

Portrait of Floyd L. Thompson NASA Langley Center Director 1960-1968. Died in 1976

This NAC image shows Qi Baishi and Hovnatanian, two craters that were newly named in November 2008. Qi Baishi is named for the famous Chinese painter who died in 1957. Hovnatanian is named for the nineteenth century Armenian painter Hakop Hovnatanian.

S66-39060 --- Dr. James E. Webb, NASA Administrator -- February 14, 1961 - October 7, 1968 (Died 03/27/92)

S61-01250 (20 Jan. 1961) --- Photo of the Mercury astronauts standing beside a Convair 106-B aircraft. They are, left to right, M. Scott Carpenter, L. Gordon Cooper Jr., John H. Glenn Jr., Virgil I. Grissom, Walter M. Schirra Jr., Alan B. Shepard Jr. and Donald K. Slayton. EDITOR'S NOTE: Astronaut Gus Grissom died in the Apollo 1 -- Apollo/Saturn (AS-204) -- fire at Cape Kennedy, Florida on Jan. 27, 1967. Astronaut Deke Slayton died from complications of a brain tumor, in League City, Texas on June 13, 1993. Astronaut Shepard died after a lengthy illness in Monterey, California, on July 21, 1998. As of Jan. 1, 1977 none of the seven astronauts remained with the NASA Space Program. However, in October 1998, United States Senator Glenn (Democrat-Ohio) flew as payload specialist on the STS-95 mission. Photo credit: NASA

S84-39408 (6 Aug. 1984) --- Astronaut Francis R. Scobee, commander. Photo credit: NASA (NOTE: Astronaut Scobee died in the STS-51L space shuttle Challenger accident Jan. 28, 1986.)

S78-35306 (31 Jan. 1978) --- Astronaut S. David Griggs. (NOTE: He died on June 17, 1989, near Earle, Arkansas, in the crash of a vintage World War II airplane.)

S64-31631 (10 Sept. 1964) --- Astronaut Edward H. White II. (EDITOR'S NOTE: Astronaut White died in the Apollo/Saturn 204 fire accident at Cape Kennedy on Jan. 27, 1967.)

S85-25624 (1985) --- Astronaut Gregory B. Jarvis, payload specialist. Photo credit: NASA (NOTE: Since this portrait was taken, Jarvis died in the STS-51L space shuttle Challenger explosion, on Jan. 28, 1986.)

Christopher Di Taranto, a member of the mechanical structures engineering team on the Jacobs Test and Operations Contract, stands in front of an Interim Cryogenic Propulsion Stage (ICPS) mockup during the Space Launch System avionics handling tool demonstration inside Kennedy Space Center’s Vehicle Assembly Building on April 4, 2019. The demonstration showed that avionics boxes could be successfully mounted into the SLS rocket’s upper stage safely, and with low risk of damaging a closely located hydrazine tank. Avionics boxes include the Inertial Navigation and Control Assembly and flight batteries. Di Taranto led a team to quickly resolve a non-conformance issue with the tool.

KENNEDY SPACE CENTER, FLA. - Shuttle Launch Director Mike Leinbach throws out the first pitch at a local baseball game at Manatees Stadium. KSC employees were hosted by the Brevard Manatees, a minor league baseball team in Central Florida. Before the game, attendees offered a moment of silence to honor the STS-107 crew and two recovery workers who died in a helicopter crash.

S64-31447 (10 Sept. 1964) --- Astronaut Roger B. Chaffee Editor's Note: Astronaut Chaffee died in the Apollo/Saturn 204 fire accident at Cape Canaveral, Florida, on Jan. 27, 1967, along with astronauts Virgil I. Grissom and Edward H. White II.

S85-41239 (26 Sept. 1985) --- Astronaut Sharon Christa McAuliffe, payload specialist Teacher in Space Project. NOTE: Payload specialist/teacher McAuliffe died in the STS-51L space shuttle Challenger accident, Jan. 28, 1986. Photo credit: NASA

Kennedy Space Center Launch Director Charlie Blackwell-Thompson speaks during a ceremony renaming the Florida spaceport’s launch control center to the Rocco A. Petrone Launch Control Center on Feb. 22, 2022. Petrone was instrumental in America’s first voyages to the Moon and headed the Apollo program. He died in 2006 at the age of 80.

ISS026-E-016991 (8 Jan. 2011) --- European Space Agency astronaut Paolo Nespoli, Expedition 26 flight engineer, conducts a ham radio session from the Zvezda Service Module of the International Space Station with students at Universit? degli studi di Bari ?Cittadella Mediterranea della Scienza,? Bari, Italy.

Kennedy Space Center Deputy Director Kelvin Manning speaks during a ceremony renaming the Florida spaceport’s launch control center to the Rocco A. Petrone Launch Control Center on Feb. 22, 2022. Petrone was instrumental in America’s first voyages to the Moon and headed the Apollo program. He died in 2006 at the age of 80.

John Tribe, retired Apollo engineer, North American Rockwell, speaks during a ceremony renaming Kennedy Space Center’s launch control center to the Rocco A. Petrone Launch Control Center on Feb. 22, 2022. Petrone was instrumental in America’s first voyages to the Moon and headed the Apollo program. He died in 2006 at the age of 80.

NASA astronaut John Young was remembered in a ceremony at the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex. The brief memorial took place on the afternoon of Jan. 11, 2018. Young died Jan. 5, 2018, in Houston at the age of 87. He was the only astronaut to fly in NASA's Gemini, Apollo and Space Shuttle Programs.

NASA astronaut John Young was remembered in a ceremony at the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex. The brief memorial took place on the afternoon of Jan. 11, 2018. Young died Jan. 5, 2018, in Houston at the age of 87. He was the only astronaut to fly in NASA's Gemini, Apollo and Space Shuttle Programs.

NASA astronaut John Young was remembered in a ceremony at the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex. The brief memorial took place on the afternoon of Jan. 11, 2018. Young died Jan. 5, 2018, in Houston at the age of 87. He was the only astronaut to fly in NASA's Gemini, Apollo and Space Shuttle Programs.

S87-40119 (1961) --- Astronaut Virgil I. Grissom. (NOTE: Astronaut "Gus" Grissom, one of the original seven astronauts, died January 27, 1967, at NASA?s John F. Kennedy Space Center (KSC), Cape Canaveral Florida, in the Apollo 1 spacecraft fire.)

NASA astronaut John Young was remembered in a ceremony at the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex. The brief memorial took place on the afternoon of Jan. 11, 2018. Young died Jan. 5, 2018, in Houston at the age of 87. He was the only astronaut to fly in NASA's Gemini, Apollo and Space Shuttle Programs.

Kennedy Space Center Director Janet Petro speaks during a ceremony renaming the Florida spaceport’s launch control center to the Rocco A. Petrone Launch Control Center on Feb. 22, 2022. Petrone was instrumental in America’s first voyages to the Moon and headed the Apollo program. He died in 2006 at the age of 80.

S65-19528 (1 June 1965) --- Astronauts Edward H. White II (left), Gemini-Titan 4 pilot; and James A. McDivitt, command pilot. EDITOR?S NOTE: Astronaut White died in the Apollo 1/Saturn 204 fire at Cape Kennedy on Jan. 27, 1967.

NASA astronaut John Young was remembered in a ceremony at the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex. The brief memorial took place on the afternoon of Jan. 11, 2018. Young died Jan. 5, 2018, in Houston at the age of 87. He was the only astronaut to fly in NASA's Gemini, Apollo and Space Shuttle Programs.

A memorial tribute from the Smithsonian is seen at the entrance of a private memorial service celebrating the life of Neil Armstrong, Aug. 31, 2012, at the Camargo Club in Cincinnati. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

Attendees to the memorial service for Neil Armstrong sing a hymnal, Thursday, Sept. 13, 2012, at the Washington National Cathedral. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

CAPE CANAVERAL, Fla. -- A wreath honoring former NASA astronaut Steven R. Nagel is displayed beside his photo at the Space Shuttle Atlantis exhibit at the Kennedy Space Center Visitor Complex in Florida. Nagel died Aug. 21 after a long illness. He was 67 years old. Nagel served as a mission specialist on his first space shuttle flight, STS-51G, in 1985. He was pilot on his second shuttle flight, STS-61A, also in 1985. He commanded his final two flights, STS-37 and STS-55, in 1991 and 1993, respectively. He logged a total of 723 hours in space. To learn more about Nagel's career, visit http://www.nasa.gov/press/2014/august/former-nasa-astronaut-steven-nagel-veteran-of-four-shuttle-flights-dies-at-67/. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. – Former NASA astronaut Jon McBride speaks at a wreath-laying ceremony honoring former NASA astronaut Steven R. Nagel at the Space Shuttle Atlantis exhibit at the Kennedy Space Center Visitor Complex in Florida. Nagel died Aug. 21 after a long illness. He was 67 years old. Nagel served as a mission specialist on his first space shuttle flight, STS-51G, in 1985. He was pilot on his second shuttle flight, STS-61A, also in 1985. He commanded his final two flights, STS-37 and STS-55, in 1991 and 1993, respectively. He logged a total of 723 hours in space. To learn more about Nagel's career, visit http://www.nasa.gov/press/2014/august/former-nasa-astronaut-steven-nagel-veteran-of-four-shuttle-flights-dies-at-67/. Photo credit: NASA/Dimitri Gerondidakis

CAPE CANAVERAL, Fla. -- A wreath honoring former NASA astronaut Steven R. Nagel is displayed beside his photo at the Space Shuttle Atlantis exhibit at the Kennedy Space Center Visitor Complex in Florida. Nagel died Aug. 21 after a long illness. He was 67 years old. Nagel served as a mission specialist on his first space shuttle flight, STS-51G, in 1985. He was pilot on his second shuttle flight, STS-61A, also in 1985. He commanded his final two flights, STS-37 and STS-55, in 1991 and 1993, respectively. He logged a total of 723 hours in space. To learn more about Nagel's career, visit http://www.nasa.gov/press/2014/august/former-nasa-astronaut-steven-nagel-veteran-of-four-shuttle-flights-dies-at-67/. Photo credit: NASA/Dimitri Gerondidakis

In the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex, Center Director Bob Cabana and space shuttle astronaut Jon McBride participate in a ceremony to honoring the memory of former NASA astronaut Richard Gordon. Having performed two spacewalks during Gemini XI in 1966, Gordon later served as command module pilot on Apollo 12 in 1969. Gordon died Nov. 6, 2017, at the age of 88.

U.S. Sen. Rob Portman, R-Ohio, speaks during a memorial service celebrating the life of Neil Armstrong, Friday, Aug. 31, 2012, at the Camargo Club in Cincinnati. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

NASA Administrator Charles Bolden delivers a tribute during a memorial service celebrating the life of Neil Armstrong, Thursday, Sept. 13, 2012, at the Washington National Cathedral. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

Kennedy Space Center Director Bob Cabana speaks to guests in the Apollo-Saturn V Center at the spaceport's visitor complex on Wednesday, May 30, 2018. The ceremony is honoring the memory of former NASA astronaut Alan Bean. As lunar module pilot on Apollo 12, Bean was the fourth person to walk on the Moon in November 1969. He went on to command the 59-day Skylab 3 mission in 1973. He died in Houston on May 26, 2018, at the age of 86.

Apollo 11 Astronauts Michael Collins, left, NASA Deputy Administrator Lori Garver and NASA Administrator Charles Bolden, right, talk at a private memorial service celebrating the life of Neil Armstrong, Aug. 31, 2012, at the Camargo Club in Cincinnati. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

Eric "Rick" Armstrong, son of Neil Armstrong, speaks during a memorial service celebrating the life of his father, Friday, Aug. 31, 2012, at the Camargo Club in Cincinnati. Neil Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

A memorial wreath placed in the Apollo-Saturn V Center of the Kennedy Space Center Visitor Complex on Wednesday, May 30, 2018, honors former NASA astronaut Alan Bean. He was the fourth person to walk on the Moon as lunar module pilot on Apollo 12 in November 1969. He went on to command the 59-day Skylab 3 mission in 1973. He died in Houston on May 26, 2018, at the age of 86.

Shown is a display honoring former Kennedy Space Center launch director Rocco Petrone at the Florida spaceport on Feb. 22, 2022. During a ceremony held at Kennedy, the launch control center was officially renamed to the Rocco A. Petrone Launch Control Center. Petrone was instrumental in America’s first voyages to the Moon and headed the Apollo program. He died in 2006 at the age of 80.

A display dedicated to former Kennedy Space Center launch director Rocco Petrone is viewed at Kennedy Space Center on Feb. 22, 2022. During a ceremony held at the Florida spaceport, Kennedy’s launch control center was officially renamed to the Rocco A. Petrone Launch Control Center. Petrone was instrumental in America’s first voyages to the Moon and headed the Apollo program. He died in 2006 at the age of 80.

S78-35300 (31 Jan 1978) -- NASA Astronaut Dr. Ronald E. McNair (PH.D.) was assigned as a mission specialist and was a crewmember on two Space Shuttle Missions. He first flew on STS 41-B in 1984 where he performed numerous science experiments. On his second flight, STS 51-L, Dr. McNair died on January 28, 1986 when the Space Shuttle Challenger exploded after launch from the Kennedy Space Center, Florida. NASA Photograph

In the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex, a guest pays respect to former NASA astronaut Richard Gordon. A memorial wreath was placed following a ceremony to honor the memory of Gordon who performed two spacewalks during Gemini XI in 1966 and served as command module pilot on Apollo 12 in 1969. Gordon died Nov. 6, 2017, at the age of 88.

KENNEDY SPACE CENTER, FLA. - The Astronaut Memorial Space Mirror at the KSC Visitor Complex has had added attention since the loss of the Columbia crew Feb. 1, 2003, when they died in an explosion as they were returning to Earth from mission STS-107. The memorial is a national tribute to 17 American astronauts who previously gave their lives to the quest to explore space.

Apollo 13 Astronaut Jim Lovell, left, former NASA Administrator Dan Goldin, Sen. John Glenn, third from left, and NASA Administrator Charles Bolden, right, talk at a private memorial service celebrating the life of Neil Armstrong, Aug. 31, 2012, at the Camargo Club in Cincinnati. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

NASA Deputy Administrator Lori Garver, right, shares a moment with Apollo 17 mission commander Gene Cernan, the last man to walk on the moon, left, as U.S. Sen. Kay Bailey Hutchison, R-Texas, center looks on prior to a memorial service celebrating the life of Neil Armstrong, Thursday, Sept. 13, 2012, at the Washington National Cathedral. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

KENNEDY SPACE CENTER, FLA. -- A view of the Astronaut Memorial Space Mirror at the KSC Visitor Complex. The memorial is a national tribute to 17 American astronauts who previously gave their lives to the quest to explore space. The memorial has had added attention since the loss of the Columbia crew Feb. 1, 2003, when they died in an explosion as they were returning to Earth from mission STS-107.

On May 28, 1958, Jupiter Intermediate Range Ballistic Missile provided by U.S. Army team in Huntsville, Alabama, launched a nose cone carrying Baker, a South American squirrel monkey and Able, an American-born rhesus monkey. Baker, pictured here and commonly known as "Miss Baker", was later given a home at the U.S. Space and Rocket Center until her death on November 29, 1984. Able died in 1958. (Photo - Courtesy of Huntsville/Madison County Public Library)

Workers add to the Astronaut Memorial Mirror the names of the Columbia crew who died in the STS-107 accident. Dedicated May 9, 1991, the Astronaut Memorial honors U.S. astronauts who gave their lives for space exploration. The "Space Mirror," 42 1/2 feet high by 50 feet wide, illuminates the names of the fallen astronauts cut through the monument's black granite surface. The Memorial Mirror is accessible through the KSC Visitor Complex.

Associate Kennedy Space Center Director Kelvin Manning joins guests in a ceremony on Wednesday, May 30, 2018, honoring former NASA astronaut Alan Bean. As lunar module pilot on Apollo 12, Bean was the fourth person to walk on the Moon in November 1969. He went on to command the 59-day Skylab 3 mission in 1973. He died in Houston on May 26, 2018, at the age of 86.

Julie Robinson, Chief Scientist for NASA's International Space Station Division, left, and Livio Narici, Professor of Applied Physics at the Università di Roma "Tor Vergata" and ASI, lead a discussion titled “ISS-Moon-Mars: Using Spaceflight Platforms to Study and Simulate Future Missions” during the the 70th International Astronautical Congress, Monday, Oct. 21, 2019 at the Walter E. Washington Convention Center in Washington. Photo Credit: (NASA/Joel Kowsky)

US Navy personnel carry the cremains of Apollo 11 astronaut Neil Armstrong off of a military aircraft at Naval Station Mayport the day before the Armstrong burial at sea service, Thursday, Sept. 13, 2012, Mayport, Fla. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

Former NASA astronaut Jon McBride places a wreath at the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex. The brief memorial honoring NASA astronaut John Young took place on the afternoon of Jan. 11, 2018. Young died Jan. 5, 2018, in Houston at the age of 87. He was the only astronaut to fly in NASA's Gemini, Apollo and Space Shuttle Programs.

Therrin Protze, COO at the Kennedy Space Center Visitor Complex, speaks in the Apollo-Saturn V Center during a ceremony on Wednesday, May 30, 2018, honoring former NASA astronaut Alan Bean. As lunar module pilot on Apollo 12, Bean was the fourth person to walk on the Moon in November 1969. He went on to command the 59-day Skylab 3 mission in 1973. He died in Houston on May 26, 2018, at the age of 86.

Businessman and friend of Neil Armstrong, Charles Mechem, speaks during a memorial service celebrating the life of Armstrong, Friday, Aug. 31, 2012, at the Camargo Club in Cincinnati. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

A photograph of Neil Armstrong as a young man is displayed on a table during a memorial service celebrating the life of Armstrong, Friday, Aug. 31, 2012, at the Camargo Club in Cincinnati. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

Mark Armstrong, son of Neil Armstrong, speaks during a memorial service celebrating the life of his father, Friday, Aug. 31, 2012, at the Camargo Club in Cincinnati. Neil Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

An image of Neil Armstrong is projected on a television screen as attendees sit in the Nave during a memorial service celebrating the life of Neil Armstrong at the Washington National Cathedral, Thursday, Sept. 13, 2012. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

Apollo 17 astronaut Gene Cernan, the last man to walk on the moon, speaks during a memorial service celebrating the life of Neil Armstrong at the Washington National Cathedral, Thursday, Sept. 13, 2012. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Paul E. Alers)

In the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex, former NASA astronaut Richard Gordon's plaque is seen among others enshrined in the U.S. Astronaut Hall of Fame. Gordon performed two spacewalks during Gemini XI in 1966 and was command module pilot on Apollo 12 in 1969. Gordon died Nov. 6, 2017, at the age of 88.

Acolytes lead the recessional through the Nave at the conclusion of a memorial service celebrating the life of Neil Armstrong at the Washington National Cathedral, Thursday, Sept. 13, 2012. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit:(NASA/Paul E. Alers)

The south polar residual cap is constantly changing as carbon dioxide sublimates from steep slopes, enlarging pits, and condenses on flat areas, filling pits. Sometimes the strange landscape produces something that looks familiar, like the mascot of a certain peanut company, who recently died in a commercial, and was "creamated" according to "Saturday Night Live." At least, he still has Mars. https://photojournal.jpl.nasa.gov/catalog/PIA24617

Carol Armstrong, wife of Neil Armstrong, and Piper Van Wagenen, one of 10 grandchildren, are seen during a memorial service celebrating the life of Neil Armstrong, Friday, Aug. 31, 2012, at the Camargo Club in Cincinnati. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

Former U.S. Sen. John Glenn, left, and Buzz Aldrin shake hands prior to a memorial service celebrating the life of Neil Armstrong, Thursday, Sept. 13, 2012, at the Washington National Cathedral. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

In the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex, space shuttle astronaut Jon McBride, speaks at a ceremony to honoring the memory of former NASA astronaut Richard Gordon. Having performed two spacewalks during Gemini XI in 1966, Gordon later served as command module pilot on Apollo 12 in 1969. Gordon died Nov. 6, 2017, at the age of 88.

U.S. Navy F/A-18 jets from Strike Fighter Squadron (VFA) 106 and Strike Fighter Squadron (VFA) 34, from Naval Air Station Oceana (Va.) fly in a "Missing Man" formation over the Camargo Club following a memorial service celebrating the life of Neil Armstrong, Friday, Aug. 31, 2012, in Cincinnati. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

S90-27594 (November 1989) --- Manley L. "Sonny" Carter Jr., STS-33 mission specialist, wearing a Launch and Entry Suit (LES), poses in front of the space shuttle Discovery, Orbiter Vehicle (OV) 103 at the Kennedy Space Center (KSC) Launch Complex Pad 39B, at the 195 feet level elevator entrance at Pad 39B. Visible in the background is the catwalk to OV-103's side hatch and the Atlantic Ocean. Note: Carter died April 5, 1991 at age 43, in a civil aviation accident.

Delaware North COO Therrin Protze speaks during a ceremony at the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex. The brief memorial honoring NASA astronaut John Young took place on the afternoon of Jan. 11, 2018. Young died Jan. 5, 2018, in Houston at the age of 87. He was the only astronaut to fly in NASA's Gemini, Apollo and Space Shuttle Programs.

US Navy personnel salute as the cremains of Apollo 11 astronaut Neil Armstrong are transferred from a military aircraft at Naval Station Mayport the day before the Armstrong burial at sea service, Thursday, Sept. 13, 2012, Mayport, Fla. Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, died Saturday, Aug. 25. He was 82. Photo Credit: (NASA/Bill Ingalls)

jsc2019e039828 (6/25/2019) --- A preflight photo taken as part of Nano Antioxidants Experiment to be performed in Kubik incubator on board the ISS. C2C12 skeletal muscle cells grown in laboratory on Earth. Confocal microscopy image showing cytoskeletal actin in red, vinculin in green, and cell nuclei in blue. The aim of the Nano Antioxidants investigation is to research innovative approaches for cellular stimulation to counteract the negative effects of long-term microgravity on the musculoskeletal system. (Image courtesy of Dr. Giada Genchi, Istituto Italiano di Tecnologia-IIT)