KENNEDY SPACE CENTER, FLA. -- Evelyn Husband-Thompson, widow of shuttle commander Rick Husband on mission STS-107, and her children pause in front of the memorial dedicated to the crew of Columbia who were lost as they returned from the mission. Husband-Thompson participated in the special event held to honor NASA's fallen heroes in front of the Space Mirror Memorial at NASA's Kennedy Space Center Visitor Complex. Kennedy marked the NASA Day of Remembrance with special ceremonies. This year the crew of Columbia was remembered in a special way on the day that marked the fifth anniversary of the Columbia accident. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. -- At a special commemorative service to honor NASA's fallen heroes, Evelyn Husband-Thompson, widow of shuttle commander Rick Husband on mission STS-107, shares her memories of the day the space shuttle Columbia was lost as it returned from the mission. Husband-Thompson stands in front of the Space Mirror Memorial at NASA's Kennedy Space Center Visitor Complex. Kennedy marked the NASA Day of Remembrance with special ceremonies. This year the crew of Columbia was remembered in a special way on the day that marked the fifth anniversary of the Columbia accident. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- Evelyn Husband-Thompson, widow of shuttle commander Rick Husband on mission STS-107, and her children place flowers at the memorial dedicated to the seven crew members of Columbia who were lost as they returned from the mission. Husband-Thompson participated in the special event held to honor NASA's fallen heroes in front of the Space Mirror Memorial at NASA's Kennedy Space Center Visitor Complex. Kennedy marked the NASA Day of Remembrance with special ceremonies. This year the crew of Columbia was remembered in a special way on the day that marked the fifth anniversary of the Columbia accident. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- In a special commemorative service held at NASA's Kennedy Space Center Visitor Complex to honor NASA's fallen heroes, astronaut Eileen Collins speaks to guests gathered at the Space Mirror Memorial. Collins commanded the first shuttle mission following the Columbia accident, STS-114. Kennedy marked the NASA Day of Remembrance with special ceremonies. This year the crew of Columbia was remembered in a special way on the day that marked the fifth anniversary of the Columbia accident. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- In a special commemorative service held at NASA's Kennedy Space Center Visitor Complex to honor NASA's fallen heroes, NASA Administrator Michael Griffin speaks to guests gathered at the Space Mirror Memorial. Kennedy marked the NASA Day of Remembrance with special ceremonies. This year the crew of Columbia was remembered in a special way on the day that marked the fifth anniversary of the Columbia accident. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- In a special commemorative service held at NASA's Kennedy Space Center Visitor Complex to honor NASA's fallen heroes, Kennedy Center Director Bill Parsons speaks to guests gathered in front of the Space Mirror Memorial. Other participants seated on the dais are (from left) NASA Administrator Michael Griffin; Chairman of the Indian Space Research Organization G. Madhavan Nair; the 2007 Alan Shepard Technology in Education Award winner Luther Richardson; Shuttle Commander and former NASA Associate Administrator for Space Operations William Readdy; NASA Associate Administrator for Space Operations William Gerstenmaier; Shuttle Commander Eileen Collins of the Return to Flight mission, STS-114; Evelyn Husband-Thompson, widow of Colonel Rick Husband; and Astronauts Memorial Foundation President Stephen Feldman. Kennedy marked the NASA Day of Remembrance with special ceremonies. This year the crew of Columbia was remembered in a special way on the day that marked the fifth anniversary of the Columbia accident. Photo credit: NASA/Kim Shiflett

STEVE MILEY, ASSOCIATE DIRECTOR OF NASA'S MARSHALL SPACE FLIGHT CENTER, LIGHTS A MEMORIAL CANDLE JAN. 30, HONORING THE BRAVE EXPLORERS WHO LOST THEIR LIVES IN PURSUIT OF HUMANITY’S DESTINY IN SPACE. MARSHALL, ALONG WITH NASA CENTERS AND PARTNER FACILITIES AROUND THE COUNTRY, HOLD DAY OF REMEMBRANCE CEREMONIES EARLY EACH YEAR TO RECOGNIZE ITS FALLEN HEROES

A portrait of Sen. John Glenn and a memorial wreath stand at the Heroes and Legends exhibit hall at the Kennedy Space Center Visitor Complex before a ceremony remembering the iconic astronaut who passed away Dec. 8, 2016 at age 95. Glenn, one of the first seven astronauts NASA chose to fly the first missions of the Space Age, gained worldwide acclaim during his Mercury mission that made him the first American to orbit the Earth. He flew again in 1998 aboard space shuttle Discovery at age 77.

A memorial wreath stands at the Heroes and Legends exhibit hall at the Kennedy Space Center Visitor Complex before a ceremony remembering astronaut Sen. John Glenn, who passed away Dec. 8, 2016 at age 95. Glenn, one of the first seven astronauts NASA chose to fly the first missions of the Space Age, gained worldwide acclaim during his Mercury mission that made him the first American to orbit the Earth. He flew again in 1998 aboard space shuttle Discovery at age 77.

KENNEDY SPACE CENTER, FLA. -- A wreath is suspended in front the Space Mirror Memorial at NASA's Kennedy Space Center Visitor Complex in memory of the fallen astronauts who passed away in their journeys of exploration. Kennedy marked the NASA Day of Remembrance with special ceremonies. This year the crew of Columbia was remembered in a special way on the day that marked the fifth anniversary of the Columbia accident. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- A visitor at NASA's Kennedy Space Center Visitor Complex photographs the special memorial for the seven crew members of Columbia who were lost as they returned from mission STS-107 in 2003. Kennedy marked the NASA Day of Remembrance with special ceremonies. This year the crew of Columbia was remembered in a special way on the day that marked the fifth anniversary of the Columbia accident. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- (From left) NASA Associate Administrator for Space Operations William Gerstenmaier; Evelyn Husband-Thompson, widow of Colonel Rick Husband, who died in the space shuttle Columbia accident; and NASA Administrator Michael Griffin pause in front of the flowers left in remembrance of the fallen heroes. Kennedy marked the NASA Day of Remembrance with special ceremonies. This year the crew of Columbia was remembered in a special way on the day that marked the fifth anniversary of the Columbia accident. Photo credit: NASA/Kim Shiflett

SGT. JAMES OLD, RIGHT, PERFORMS THE INTRODUCTION FROM JAMES HORNER'S "APOLLO 13" FILM SCORE AT THE U.S. SPACE AND ROCKET CENTER'S MEMORIAL EVENT HONORING NASA'S LOST SPACE HEROES.

Former astronaut Jon McBride speaks during a remembrance ceremony Jan. 18, 2017, at NASA's Kennedy Space Center in Florida. Cernan, who flew on Gemini and Apollo missions, commanded the Apollo 17 mission and was the last person to walk on the moon.

Former astronaut Bob Cabana, director of NASA's Kennedy Space Center in Florida, speaks during a remembrance ceremony Jan. 18, 2017. Cernan, who flew on Gemini and Apollo missions, commanded the Apollo 17 mission and was the last person to walk on the moon.

A display for astronaut Gene Cernan is shown following a remembrance ceremony Jan. 18, 2017, at NASA's Kennedy Space Center in Florida. Cernan, who flew on Gemini and Apollo missions, commanded the Apollo 17 mission and was the last person to walk on the moon.

A photo of astronaut Gene Cernan is displayed alongside a memorial wreath before a remembrance ceremony Jan. 18, 2017, at NASA's Kennedy Space Center in Florida. Cernan, who flew on Gemini and Apollo missions, commanded the Apollo 17 mission and was the last person to walk on the moon.

The Astronaut Hall of Fame display for astronaut Gene Cernan is shown following a remembrance ceremony Jan. 18, 2017, at NASA's Kennedy Space Center in Florida. Cernan, who flew on Gemini and Apollo missions, commanded the Apollo 17 mission and was the last person to walk on the moon.

Therrin Protze, Chief Operating Officer, Delaware North Corporation Parks & Resorts at KSC, Inc., speaks during a remembrance ceremony Jan. 18, 2017, at NASA's Kennedy Space Center in Florida. Cernan, who flew on Gemini and Apollo missions, commanded the Apollo 17 mission and was the last person to walk on the moon.

A photo of astronaut Gene Cernan is displayed alongside a memorial wreath before a remembrance ceremony Jan. 18, 2017, at NASA's Kennedy Space Center in Florida. Cernan, who flew on Gemini and Apollo missions, commanded the Apollo 17 mission and was the last person to walk on the moon.

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.

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.

A memorial wreath has been placed in the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex in Florida following a ceremony honoring the memory of former astronaut Owen Garriott. The ceremony was held April 18, 2019. Garriott flew aboard the Skylab space station during the Skylab 3 mission and also on space shuttle Columbia for the STS-9/Spacelab-1 mission. He passed away April 15 at the age of 88.

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.

A memorial wreath is placed in the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex in Florida following a ceremony honoring the memory of former Apollo astronaut Walter Cunningham. The ceremony was held Jan. 9, 2023. Cunningham was the lunar module pilot for Apollo 7 – the first crewed flight test of the Apollo spacecraft – where he tested maneuvers necessary for docking and lunar orbit rendezvous. He passed away Jan. 3 at the age of 90.

In the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex, a memorial wreath was placed following a ceremony to honor the memory of former NASA astronaut Richard Gordon. He 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.

In the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex in Florida, a memorial wreath was placed following a ceremony honoring the memory of former astronaut Owen Garriott. The ceremony was held April 18, 2019. Garriott flew aboard the Skylab space station during the Skylab 3 mission and also on space shuttle Columbia for the STS-9/Spacelab-1 mission. He passed away April 15 at the age of 88.

In the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex in Florida, a memorial wreath was placed following a ceremony honoring the memory of former astronaut Owen Garriott. The ceremony was held April 18, 2019. Garriott flew aboard the Skylab space station during the Skylab 3 mission and also on space shuttle Columbia for the STS-9/Spacelab-1 mission. He passed away April 15 at the age of 88.

In the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex, a memorial wreath was placed following a ceremony to honor the memory of former NASA astronaut Richard Gordon. He 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.

A memorial wreath has been placed in the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex in Florida following a ceremony honoring the memory of former astronaut Owen Garriott. The ceremony was held April 18, 2019. Garriott flew aboard the Skylab space station during the Skylab 3 mission and also on space shuttle Columbia for the STS-9/Spacelab-1 mission. He passed away April 15 at the age of 88.

KENNEDY SPACE CENTER, FLA. - Family members of the STS-107 astronauts and other dignitaries attend a dedication ceremony at the Space Mirror Memorial at the Kennedy Space Center Visitor Complex. During this solemn event, the names of the STS-107 astronauts who lost their lives during the Columbia accident -- Rick Husband, Willie McCool, Laurel Clark, Michael Anderson, David Brown, Kalpana Chawla, and Ilan Ramon -- join the names of 17 other space heroes who gave their lives for the U.S. space program. 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.

KENNEDY SPACE CENTER, FLA. - NASA T-38 jets fly over the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in the Missing Man Formation. During this dedication ceremony, the names of the STS-107 astronauts who lost their lives during the Columbia accident -- Rick Husband, Willie McCool, Laurel Clark, Michael Anderson, David Brown, Kalpana Chawla, and Ilan Ramon -- join the names of 17 other space heroes who gave their lives for the U.S. space program. 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.

KENNEDY SPACE CENTER, FLA. - Family members of the STS-107 astronauts and other dignitaries attend a dedication ceremony at the Space Mirror Memorial at the Kennedy Space Center Visitor Complex. During this solemn event, the names of the STS-107 astronauts who lost their lives during the Columbia accident -- Rick Husband, Willie McCool, Laurel Clark, Michael Anderson, David Brown, Kalpana Chawla, and Ilan Ramon -- join the names of 17 other space heroes who gave their lives for the U.S. space program. 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.

KENNEDY SPACE CENTER, FLA. - A ceremonial wreath is placed at the Space Mirror Memorial at the Kennedy Space Center Visitor Complex. During this dedication ceremony, the names of the STS-107 astronauts who lost their lives during the Columbia accident -- Rick Husband, Willie McCool, Laurel Clark, Michael Anderson, David Brown, Kalpana Chawla, and Ilan Ramon -- join the names of 17 other space heroes who gave their lives for the U.S. space program. 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.

KENNEDY SPACE CENTER, FLA. - A ceremonial wreath is placed at the Space Mirror Memorial at the Kennedy Space Center Visitor Complex. During this dedication ceremony, the names of the STS-107 astronauts who lost their lives during the Columbia accident -- Rick Husband, Willie McCool, Laurel Clark, Michael Anderson, David Brown, Kalpana Chawla, and Ilan Ramon -- join the names of 17 other space heroes who gave their lives for the U.S. space program. 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.

KENNEDY SPACE CENTER, FLA. - Family members of the STS-107 astronauts and other dignitaries attend a dedication ceremony at the Space Mirror Memorial at the Kennedy Space Center Visitor Complex. During this solemn event, the names of the STS-107 astronauts who lost their lives during the Columbia accident -- Rick Husband, Willie McCool, Laurel Clark, Michael Anderson, David Brown, Kalpana Chawla, and Ilan Ramon -- join the names of 17 other space heroes who gave their lives for the U.S. space program. 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.

KENNEDY SPACE CENTER, FLA. -- Family members of the STS-107 astronauts and other dignitaries watch NASA T-38 jets fly over the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in a Missing Man Formation. During this dedication ceremony, the names of the STS-107 astronauts who lost their lives during the Columbia accident -- Rick Husband, Willie McCool, Laurel Clark, Michael Anderson, David Brown, Kalpana Chawla, and Ilan Ramon -- join the names of 17 other space heroes who gave their lives for the U.S. space program.

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center Visitor Complex's Astronaut Memorial Mirror, James Loftus (right), director of the Miami-Dade Police Department; Jerry Ross, chief of the Vehicle Integration Test Office; and Kennedy Center Director Bob Cabana salute the Space Mirror Memorial during a U.S. Honor Flag presentation. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Gospel singer BeBe Winans preforms his song, 'Ultimate Sacrifice,' during the Kennedy Space Center's Day of Remembrance ceremony. The song honors heroes who lost their lives in service to the nation. Winans also sang the national anthem. Space center employees and guests gathered at the Space Mirror Memorial at the visitor complex for the annual event which took place on the 10th anniversary of the loss of the space shuttle Columbia and its crew. The ceremony also honored the astronauts of Apollo 1 and the shuttle Challenger. Dedicated in 1991, the names of fallen astronauts are emblazoned the Space Mirror Memorial's 4.5-foot-high-by-50-foot-wide polished black granite surface which reflects the sky and has been designated by Congress as a National Memorial. Image credit: NASA Television

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center Visitor Complex's Astronaut Memorial Mirror, James Loftus (right), director of the Miami-Dade Police Department; Jerry Ross, chief of the Vehicle Integration Test Office; and Kennedy Center Director Bob Cabana salute the Space Mirror Memorial during a U.S. Honor Flag presentation. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

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.

A photo of former NASA astronaut Gerald “Jerry” Carr is displayed alongside a memorial wreath during a remembrance ceremony at the agency’s Kennedy Space Center in Florida on Aug. 31, 2020. The ceremony was held at the Heroes and Legends exhibit within the Astronaut Hall of Fame at Kennedy’s visitor complex. Carr was commander of the Skylab 4 mission – the final, crewed mission of the Skylab program. He passed away Aug. 26 at the age of 88.

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.

A photo of former NASA astronaut Gerald “Jerry” Carr is displayed alongside a memorial wreath during a remembrance ceremony at the agency’s Kennedy Space Center in Florida on Aug. 31, 2020. The ceremony was held at the Heroes and Legends exhibit within the Astronaut Hall of Fame at Kennedy’s visitor complex. Carr was commander of the Skylab 4 mission – the final, crewed mission of the Skylab program. He passed away Aug. 26 at the age of 88.

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.

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.

Former NASA astronaut Jon McBride, left, greets Mike McCulley 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.

Former NASA astronaut Mike McCulley 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.

Former NASA astronaut Jon McBride 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.

A photo of former astronaut Owen Garriott is displayed during a memorial ceremony at NASA’s Kennedy Space Center in Florida. The ceremony was held April 18, 2019, at the Heroes and Legends exhibit within the Astronaut Hall of Fame at the center’s visitor complex. Garriott flew aboard the Skylab space station during the Skylab 3 mission and also on space shuttle Columbia for the STS-9/Spacelab-1 mission. He passed away April 15 at the age of 88.

CAPE CANAVERAL, Fla. – At the Kennedy Space Center Visitor Complex, Center Director Bob Cabana takes part in a ceremony paying tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other NASA colleagues, during NASA's Day of Remembrance observance Jan. 29. The public was invited to the wreath-laying ceremony in front of the Space Mirror Memorial, on which are engraved the names of NASA's heroes who lost their lives while furthering the cause of exploration and discovery. Photo credit: NASA/Kim Shiflett

Kennedy Space Center Director Bob Cabana is photographed next to a memorial wreath and portrait of former NASA astronaut Gerald “Jerry” Carr during a remembrance ceremony on Aug. 31, 2020. The ceremony was held at the Heroes and Legends exhibit within the Astronaut Hall of Fame at Kennedy’s visitor complex. Carr was commander of the Skylab 4 mission – the final, crewed mission of the Skylab program. He passed away Aug. 26 at the age of 88.

A photo of former Apollo astronaut Walter Cunningham is displayed during a memorial ceremony at NASA’s Kennedy Space Center in Florida. The ceremony was held Jan. 9, 2023, at the Heroes and Legends exhibit within the Astronaut Hall of Fame at the center’s visitor complex. Cunningham was the lunar module pilot for Apollo 7 – the first crewed flight test of the Apollo spacecraft – where he tested maneuvers necessary for docking and lunar orbit rendezvous. He passed away Jan. 3 at the age of 90.

In the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex, Center Director Bob Cabana speaks during a ceremony 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.

Therrin Protze, chief operating officer of the Kennedy Space Center Visitor Complex, speaks during a memorial ceremony honoring former Apollo astronaut Walter Cunningham. The ceremony was held Jan. 9, 2023, at the Heroes and Legends exhibit within the Astronaut Hall of Fame at the Florida spaceport’s visitor complex. Cunningham was the lunar module pilot for Apollo 7 – the first crewed flight test of the Apollo spacecraft – where he tested maneuvers necessary for docking and lunar orbit rendezvous. He passed away Jan. 3 at the age of 90.

KENNEDY SPACE CENTER, FLA. — Following the Challenger memorial ceremony held Jan. 28 in front of the Space Memorial Mirror at NASA Kennedy Space Center’s Visitor Complex, this wreath remains as a reminder of the fallen heroes. It was placed there by June Scobee Rodgers, widow of Dick Scobee, commander of Challenger, and William Gerstenmaier, associate administrator for Space Operations at NASA. They were participants in the ceremony, along with Dr. Mick Ukleja, who gave the invocation; Dr. Stephen Feldman, president of the Astronauts Memorial Foundation; Rep. Dave Weldon and Rep. Tom Feeney; William Potter, chairman of the Board of Directors of the Astronauts Memorial Foundation; William Gerstenmaier, associate administrator for Space Operations at NASA; Jim Kennedy (second from left), center director of KSC; June Scobee Rodgers, widow of Dick Scobee, commander of Challenger; Col. Richard Scobee, son of Dick Scobee and June Scobee Rodgers; Capt. Frederick Hauck, commander of the first mission after Challenger; Dr. Joseph Allen, astronaut and scientist and chairman of the Board of the Challenger Centers for Space Science. June Scobee Rodgers and Gerstenmaier placed a wreath at the base of the memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At the base of the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex, Center Director Bob Cabana salutes as James Loftus (right), director of the Miami-Dade Police Department presents him with the U.S. Honor Flag. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- The Miami-Dade Police Department Honor Guard Unit play the bagpipes as they make their way to the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex for the U.S. Honor Flag presentation ceremony. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Troy Cryder

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center Visitor Complex's Astronaut Memorial Mirror, Center Director Bob Cabana presents the U.S. Honor Flag to Jerry Ross, chief of the Vehicle Integration Test Office. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- The Miami-Dade Police Department Honor Guard Unit play the bagpipes as they make their way to the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex for the U.S. Honor Flag presentation ceremony. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Troy Cryder

CAPE CANAVERAL, Fla. -- Honor guards march to the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex to participate in a U.S. Honor Flag presentation ceremony. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Honor guards march to the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex to participate in a U.S. Honor Flag presentation ceremony. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Troy Cryder

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center Visitor Complex, Center Director Bob Cabana stands at the base of the Astronaut Memorial Mirror to accept the U.S. Honor Flag presented to him by James Loftus (right), director of the Miami-Dade Police Department. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center Visitor Complex's Astronaut Memorial Mirror, Jerry Ross, chief of the Vehicle Integration Test Office places the U.S. Honor Flag in a secure case held by Mark Borsi NASA security director. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Honor guards march to the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex to participate in a U.S. Honor Flag presentation ceremony. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Troy Cryder

CAPE CANAVERAL, Fla. -- Honor guards march to the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex to participate in a U.S. Honor Flag presentation ceremony. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Troy Cryder

CAPE CANAVERAL, Fla. -- Kennedy Center Director Bob Cabana and Vehicle Integration Test Office and former NASA astronaut Jerry Ross walk past an honor guard as they make their way to the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex to participate in a U.S. Honor Flag presentation ceremony. The flag will be presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At the base of the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex, James Loftus (left), director of the Miami-Dade Police Department Center salutes as Director Bob Cabana accepts the U.S. Honor Flag. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center Visitor Complex's Astronaut Memorial Mirror, Jerry Ross, chief of the Vehicle Integration Test Office holds onto the secure case containing the U.S. Honor Flag accompanied by Mark Borsi NASA security director (right) and a security guard. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Honor guards march to the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex to participate in a U.S. Honor Flag presentation ceremony. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Troy Cryder

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center Visitor Complex, Center Director Bob Cabana stands at the base of the Astronaut Memorial Mirror awaiting the arrival of James Loftus, director of the Miami-Dade Police Department who will present to him the U.S. Honor Flag. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center Visitor Complex's Astronaut Memorial Mirror, Jerry Ross, chief of the Vehicle Integration Test Office accepts the U.S. Honor Flag presented to him by Center Director Bob Cabana. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- The Miami Beach Police Department Celtic Pride Bagpipe and Drum Corps play the bagpipes as they make their way to the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex for the U.S. Honor Flag presentation ceremony. The flag will be presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At the base of the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex, Center Director Bob Cabana accepts the U.S. Honor Flag presented to him by James Loftus (right), director of the Miami-Dade Police Department. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Rockets are on display in an area known as the "Rocket Garden" at NASA's Kennedy Space Center Visitor Complex where a U.S. Honor Flag presentation ceremony is taking place at the Astronaut Memorial Mirror. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Troy Cryder

CAPE CANAVERAL, Fla. -- Honor guards march to the Astronaut Memorial Mirror at NASA's Kennedy Space Center Visitor Complex to participate in a U.S. Honor Flag presentation ceremony. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Troy Cryder

Lisa Schott, vice chairman of the Astronaut Scholarship Foundation, speaks during a memorial ceremony honoring former Apollo astronaut Walter Cunningham at NASA’s Kennedy Space Center in Florida. The ceremony was held Jan. 9, 2023, at the Heroes and Legends exhibit within the Astronaut Hall of Fame at the spaceport’s visitor complex. Cunningham was the lunar module pilot for Apollo 7 – the first crewed flight test of the Apollo spacecraft – where he tested maneuvers necessary for docking and lunar orbit rendezvous. He passed away Jan. 3 at the age of 90.

A wreath-laying ceremony honoring the memory of former Apollo 11 astronaut Michael Collins is held outside of the Heroes and Legends exhibit at the Kennedy Space Center Visitor Complex in Florida on April 30, 2021. Kennedy Director Bob Cabana and Therrin Protze, chief operating officer of Delaware North at the visitor complex, provided remarks during the ceremony. Collins served as pilot on the three-day Gemini X mission in 1966, and he was the command module pilot for the historic Apollo 11 mission in 1969, where he remained in lunar orbit while Neil Armstrong and Buzz Aldrin become the first people to walk on the Moon. Collins passed away on April 28, 2021, at the age of 90.

KENNEDY SPACE CENTER, FLA. - NASA's Associate Administrator for Space Flight William Readdy (left) and Evelyn Husband, widow of astronaut Rick Husband, place a ceremonial wreath at the Space Mirror Memorial at the Kennedy Space Center Visitor Complex. During this dedication ceremony, the names of the STS-107 astronauts who lost their lives during the Columbia accident -- Rick Husband, Willie McCool, Laurel Clark, Michael Anderson, David Brown, Kalpana Chawla, and Ilan Ramon -- join the names of 17 other space heroes who gave their lives for the U.S. space program. 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.

KENNEDY SPACE CENTER, FLA. - NASA's Associate Administrator for Space Flight William Readdy and Evelyn Husband, widow of astronaut Rick Husband, place a ceremonial wreath at the Space Mirror Memorial at the Kennedy Space Center Visitor Complex. During this dedication ceremony, the names of the STS-107 astronauts who lost their lives during the Columbia accident -- Rick Husband, Willie McCool, Laurel Clark, Michael Anderson, David Brown, Kalpana Chawla, and Ilan Ramon -- join the names of 17 other space heroes who gave their lives for the U.S. space program. 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.

KENNEDY SPACE CENTER, FLA. - NASA's Associate Administrator for Space Flight William Readdy and Evelyn Husband, widow of astronaut Rick Husband, place a ceremonial wreath at the Space Mirror Memorial at the Kennedy Space Center Visitor Complex. During this dedication ceremony, the names of the STS-107 astronauts who lost their lives during the Columbia accident -- Rick Husband, Willie McCool, Laurel Clark, Michael Anderson, David Brown, Kalpana Chawla, and Ilan Ramon -- join the names of 17 other space heroes who gave their lives for the U.S. space program. 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.

CAPE CANAVERAL, Fla. – The emblem on the jacket of a guest at NASA's Kennedy Space Center Visitor Complex commemorates NASA's 'fallen heroes' whose names are etched on the Astronauts Memorial Foundation's Space Mirror Memorial, following a ceremony on the 28th anniversary of the space shuttle Challenger accident. The day of the accident in 1986 dawned bitterly cold. Temperatures hovered just a few degrees above freezing as Challenger and its seven astronauts lifted off on the STS-51L mission. The flight ended just 73 seconds later when an O-ring in the right solid rocket booster failed, causing a fireball that led to the loss of the vehicle and crew: Commander Francis Scobee, Pilot Michael Smith, Mission Specialists Judith Resnik, Ellison Onizuka and Ronald McNair, and Payload Specialists Gregory Jarvis and Sharon Christa McAuliffe, a teacher. To learn more about the Space Shuttle Program, visit http:__www.nasa.gov_mission_pages_shuttle_main_index.html. To read the astronauts' NASA biographies, visit http:__www.jsc.nasa.gov_Bios_astrobio_former.html. For information about the AMF, visit http:__www.astronautsmemorial.org_home.html. Photo credit: NASA_Dimitri Gerondidakis

Kennedy Space Center Director Bob Cabana provides remarks during a wreath-laying ceremony in Florida, honoring the memory of former Apollo 11 astronaut Michael Collins on April 30, 2021. Therrin Protze, chief operating officer of Delaware North at Kennedy’s visitor complex, also spoke during the ceremony, held just outside of the Heroes and Legends exhibit at the visitor complex. Collins served as pilot on the three-day Gemini X mission in 1966, and he was the command module pilot for the historic Apollo 11 mission in 1969, where he remained in lunar orbit while Neil Armstrong and Buzz Aldrin become the first people to walk on the Moon. Collins passed away on April 28, 2021, at the age of 90.

Kennedy Space Center Director Bob Cabana provides remarks during a wreath-laying ceremony in Florida, honoring the memory of former Apollo 11 astronaut Michael Collins on April 30, 2021. Therrin Protze, chief operating officer of Delaware North at Kennedy’s visitor complex, also spoke during the ceremony, held just outside of the Heroes and Legends exhibit at the visitor complex. Collins served as pilot on the three-day Gemini X mission in 1966, and he was the command module pilot for the historic Apollo 11 mission in 1969, where he remained in lunar orbit while Neil Armstrong and Buzz Aldrin become the first people to walk on the Moon. Collins passed away on April 28, 2021, at the age of 90.

Therrin Protze, chief operating officer of Delaware North at the Kennedy Space Center Visitor Complex, provides remarks during a wreath-laying ceremony honoring the memory of former Apollo 11 astronaut Michael Collins on April 30, 2021. Kennedy Director Bob Cabana also spoke during the ceremony, held just outside of the Heroes and Legends exhibit at the Florida spaceport’s visitor complex. Collins served as pilot on the three-day Gemini X mission in 1966, and he was the command module pilot for the historic Apollo 11 mission in 1969, where he remained in lunar orbit while Neil Armstrong and Buzz Aldrin become the first people to walk on the Moon. Collins passed away on April 28, 2021, at the age of 90.

Kennedy Space Center Director Bob Cabana provides remarks during a wreath-laying ceremony in Florida, honoring the memory of former Apollo 11 astronaut Michael Collins on April 30, 2021. Therrin Protze, chief operating officer of Delaware North at Kennedy’s visitor complex, also spoke during the ceremony, held just outside of the Heroes and Legends exhibit at the visitor complex. Collins served as pilot on the three-day Gemini X mission in 1966, and he was the command module pilot for the historic Apollo 11 mission in 1969, where he remained in lunar orbit while Neil Armstrong and Buzz Aldrin become the first people to walk on the Moon. Collins passed away on April 28, 2021, at the age of 90.

CAPE CANAVERAL, Fla. -- Kennedy Center Director Bob Cabana and Vehicle Integration Test Office and former NASA astronaut Jerry Ross walk past an honor guard at NASA's Kennedy Space Center Visitor Complex to participate in a U.S. Honor Flag presentation ceremony. The flag will be presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center Visitor Complex, guests circle around an honor guard member after the U.S. Honor Flag presentation. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- At NASA's Kennedy Space Center Visitor Complex, Center Director Bob Cabana signs his autograph for a guest after the U.S. Honor Flag presentation. The flag is presented to NASA to be prepared to fly aboard space shuttle Atlantis on the Space Shuttle Program's final mission, STS-135. The U.S. Honor Flag has been flown nationwide, at Ground Zero and throughout the world to honor heroes who have lost their lives while serving their community and country, including police officers, firefighters, members of the Armed Forces and astronauts. More than 100 honor guard members traveled to the Space Coast to take part in the ceremony. After the flag returns to Earth, it will continue as a traveling memorial. Photo credit: NASA/Kim Shiflett

Former astronaut Bob Cabana, director of NASA's Kennedy Space Center in Florida, speaks at the Heroes and Legends exhibit hall at the Kennedy Space Center Visitor Complex during a ceremony remembering astronaut Sen. John Glenn who passed away Dec. 8, 2016 at age 95. Glenn, one of the first seven astronauts NASA chose to fly the first missions of the Space Age, gained worldwide acclaim during his Mercury mission that made him the first American to orbit the Earth. He flew again in 1998 aboard space shuttle Discovery at age 77.

An Atlas rocket and Mercury capsule like the ones that carried Sen. John Glenn into Earth orbit in February 1962 stand in the Rocket Garden at the Kennedy Space Center Visitor Complex adjacent to the Heroes and Legends exhibit hall where Glenn was remembered during a ceremony Dec. 9, 2016. Glenn, one of the Mercury Seven astronauts NASA chose to fly the first missions of the Space Age, passed away on Dec. 8, 2016, at age 95. He gained worldwide acclaim during his Mercury mission that made him the first American to orbit the Earth. He flew again in 1998 aboard space shuttle Discovery at age 77.

A plaque inside the Heroes and Legends exhibit hall at the Kennedy Space Center Visitor Complex shows astronaut Sen. John Glenn, along with his mission insignias for Friendship 7 and STS-95, the two flights he made into space. Glenn, who passed away Dec. 8, 2016 at age 95, was the last surviving member of NASA's original astronaut class. He gained worldwide acclaim during his Mercury mission that made him the first American to orbit the Earth. He flew again in 1998 aboard space shuttle Discovery at age 77.

News media members and visitors gather at the Heroes and Legends exhibit hall at the Kennedy Space Center Visitor Complex during a ceremony remembering astronaut Sen. John Glenn who passed away Dec. 8, 2016 at age 95. Glenn, one of the first seven astronauts NASA chose to fly the first missions of the Space Age, gained worldwide acclaim during his Mercury mission that made him the first American to orbit the Earth. He flew again in 1998 aboard space shuttle Discovery at age 77.

Former astronaut Bob Cabana, director of NASA's Kennedy Space Center in Florida, speaks at the Heroes and Legends exhibit hall at the Kennedy Space Center Visitor Complex during a ceremony remembering astronaut Sen. John Glenn who passed away Dec. 8, 2016 at age 95. Glenn, one of the first seven astronauts NASA chose to fly the first missions of the Space Age, gained worldwide acclaim during his Mercury mission that made him the first American to orbit the Earth. He flew again in 1998 aboard space shuttle Discovery at age 77.

Former astronaut Bob Cabana, director of NASA's Kennedy Space Center in Florida, speaks with news media members at the Heroes and Legends exhibit hall at the Kennedy Space Center Visitor Complex following a ceremony remembering astronaut Sen. John Glenn, who passed away Dec. 8, 2016 at age 95. Glenn, one of the first seven astronauts NASA chose to fly the first missions of the Space Age, gained worldwide acclaim during his Mercury mission that made him the first American to orbit the Earth. He flew again in 1998 aboard space shuttle Discovery at age 77.

Former space shuttle astronaut Jon McBride speaks at the Heroes and Legends exhibit hall at the Kennedy Space Center Visitor Complex during a ceremony remembering astronaut Sen. John Glenn who passed away Dec. 8, 2016 at age 95. Glenn, one of the first seven astronauts NASA chose to fly the first missions of the Space Age, gained worldwide acclaim during his Mercury mission that made him the first American to orbit the Earth. He flew again in 1998 aboard space shuttle Discovery at age 77.

Former astronauts Bob Cabana, director of NASA's Kennedy Space Center in Florida, from left, Jon McBride, Al Worden and Winston Scott pose outside the Heroes and Legends exhibit hall at the Kennedy Space Center Visitor Complex following a ceremony remembering astronaut Sen. John Glenn, who passed away Dec. 8, 2016 at age 95. Glenn, one of the first seven astronauts NASA chose to fly the first missions of the Space Age, gained worldwide acclaim during his Mercury mission that made him the first American to orbit the Earth. He flew again in 1998 aboard space shuttle Discovery at age 77.