Views of STS-33/51L crew personnel Prime McAuliffe and Backup Morgan at the ILC Facility during clothing selection and Building #37 during food sampling, and with the rest of the STS-33/51L crew. 40074: "Teacher-in-Space" Participant Barbara Morgan (right) is briefed on her suit and on personal hygiene equipment to be used on the STS-51L Mission. 1. JSC - Education Program (Teacher in Space) 2. Barbara Morgan 3. Christa McAuliffe 4. STS-33/51L - Crew Training (Uniforms/Food/Crew)

Candid views of the STS-33/51L Crew during study periods in their offices, 09/09/1985. Astronauts Michael J. Smith, STS-51L Pilot, and Ronald E. McNair, STS-51L Mission Specialist, are photographed in conversation while in training at JSC. JSC, HOUSTON, TX

Candid views of the STS-33/51L Crew during study periods in their offices on 09/09/1985. Astronauts Michael J. Smith (right), STS 51L Pilot, and Francis R. (Dick) Scobee, 51L Mission Commander, are photographed in conversation while in training. JSC, HOUSTON, TX

Candid views of the STS-33/51L Crew during study periods in their offices on 09/09/1985. Portrait of Astronaut Judith A. Resnik, seated in her office. JSC, HOUSTON, TX

S85-42474 (16 Oct. 1985) --- A KC-135 aircraft provides a brief period of weightlessness as a preview for a teacher, in training to fly onboard a space shuttle for the Teacher-in-Space Project, and her backup. Sharon Christa McAuliffe (center frame), STS-51L prime crew member, and Barbara Morgan, her backup, monitor an experiment involving magnetic effects - one of the tests to be performed on the STS-51L flight. The experiment uses a control box, a square receptacle containing rubber tubing, stainless steel rod, a filter with desiccant, soft iron wire and a magnet. Photo credit: NASA

S85-44835 (20 Nov. 1985) --- This flying human chain represents prime and backup payload specialists for two upcoming STS missions. The group, representing trainees for STS-61C later this year and STS-51L early next year, shared some 40 parabolas in NASA?s KSC-135, ?Zero-G? aircraft on Nov. 20. Left to right are Gerard Magilton, RCA backup payload specialist for STS-61C; Sharon Christa McAuliffe, payload specialist/teacher citizen observer for STS-51L; U.S. Rep. Bill Nelson (D., Florida), scheduled for 61-C; Barbara R. Morgan, backup to McAuliffe; and Robert J. Cenker, RCA payload specialist for 61-C. The photo was taken by Keith Meyers, New York Times. Photo credit: NASA

51L-S-002 (28 Jan. 1986) --- Flight directors Jay H. Greene (foreground) and Alan L. (Lee) Briscoe study data on monitors at their consoles in the flight control room (FCR) of the Johnson Space Center's Mission Control Center. The photo was made just moments after the announcement came that Challenger's launch phase was not nominal. Photo credit: NASA

View of STS-33/51L Prime Teacher, Christa McAuliffe (left foreground) and Barbara Morgan (second left), both "Teacher in Space" Trainees, review film shot while training with Arriflex camera. 1. McAuliffe, S. Christa - Photography 2. Morgan, Barbara - Photography

S85-44253 (November 1985) --- Five astronauts and two payload specialists make up the crew, scheduled to fly aboard the space shuttle Challenger in January of 1986. Crew members are (left to right, front row) astronauts Michael J. Smith, Francis R. (Dick) Scobee and Ronald E. McNair; Ellison S. Onizuka, Sharon Christa McAuliffe, Gregory Jarvis and Judith A. Resnik. McAuliffe and Jarvis are payload specialists, representing the Teacher in Space Project and Hughes Company, respectively. Photo credit: NASA (NOTE: On Jan. 28, 1986, the seven Challenger crew members lost their lives following an explosion during the launch phase of the STS-51L mission.)

S85-40509 (23 Sept. 1985) --- Two women representing the Teacher-in-Space project undergo training in preparation for the STS-51L mission in two photographs made in Johnson Space Center trainers. Barbara R. Morgan (left), 51-L’s backup teacher, and McAuliffe are briefed by L.W. Lew on the space shuttle galley, located on the middeck. Photo credit: NASA

S85-42470 (16 Oct. 1985) --- Sharon Christa McAuliffe, right, and Barbara R. Morgan, participating in the Teacher-in-Space Project, team up with Bob Mayfield, a JSC aerospace educations specialist, to preview some experiments in zero-G. A KC-135 aircraft flies a special pattern to provide series of brief periods of weightlessness. McAuliffe, prime crew member for STS-51L, injects a hydroponic solution into a cylinder to review one of the experiments planned for the flight. Morgan is backup for McAuliffe on that mission. Photo credit: NASA

S85-42473 (16 Oct. 1985) --- Sharon Christa McAuliffe, a teacher-citizen observer on STS-51L, smiles before participating in some zero-G rehearsals for her upcoming flight. She is seated near the controls of the KC-135 aircraft, flying for the Johnson Space Center from Ellington Air Field. Referred to as the ?zero-gravity? aircraft, the KC-135 provides brief moments of weightlessness for shuttle crew members in training. Photo credit: NASA

S85-40508 (23 Sept. 1985) --- Two women representing the Teacher-in-Space project undergo training in preparation for the STS-51L mission in two photographs made in Johnson Space Center trainers. Sharon Christa McAuliffe, named as prime crew citizen observer on the spaceflight, studies the console on the aft flight deck, which contains controls for the remote manipulator system (RMS) and other important functions. Photo credit: NASA

S85-46260 (20 Dec. 1985) --- Members of the STS-51L crew designed this patch which will represent their participation on NASA's late January 1986 mission aboard the space shuttle Challenger, depicted launching from Florida and soaring into space to carry out a variety of goals. Among the prescribed duties of the five astronauts and two payload specialists will be observation and photography of Halley's Comet, backdropped against the United States flag in the insignia. Surnames of the crew members encircle the scene, with the payload specialists being recognized below. Surname of the first teacher in space, Sharon Christa McAuliffe, is followed by a symbolic apple. Gregory Jarvis, representing Hughes, is the industrial payload specialist for the flight. NASA's crew members are astronauts Francis R. (Dick) Scobee, commander; Michael J. Smith, pilot; and Ronald E. McNair, Ellison S. Onizuka and Judith A. Resnik - all mission specialists. The NASA insignia design for space shuttle flights is reserved for use by the astronauts and for other official use as the NASA Administrator may authorize. Public availability has been approved only in the forms of illustrations by the various news media. When and if there is any change in this policy, which is not anticipated, the change will be publicly announced. Photo credit: NASA

51L-10162 (8-9 March 1986) --- View of the left solid rocket booster first piece retrieval #11 (STS-51L space shuttle Challenger). Photo credit: NASA

CAPE CANAVERAL, Fla. -- NASA/ADMIN ARRIVAL OF VICE PRESIDENT BUSH FOLLOWING STS-51L. Photo credit: NASA

CAPE CANAVERAL, Fla. -- NASA/ADMIN ARRIVAL OF VICE PRESIDENT BUSH FOLLOWING STS-51L. Photo credit: NASA

S86-25192 (January 1986) --- Two payload specialists in training for the STS-51L mission, and a payload specialist from STS-61C share a ?zero-gravity? flight aboard a KC-135 aircraft over the Gulf of Mexico. Left to right are United States Representative Bill Nelson (Democrat, Florida), Sharon Christa McAuliffe, and Barbara R. Morgan. The congressman is a payload specialist for the STS-61C mission. McAuliffe is the prime payload specialist for the Teacher-in-Space Project aboard the STS-51L mission; and Morgan is her backup. The photo was taken by Keith meyers of the New York Times. EDITOR?S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S85-39943 (9 Sept. 1985) --- Sharon Christa McAuliffe, STS-51L citizen observer/payload specialist representing the Teacher in Space Program, meets the other STS-51L crew members. The crew members pictured are (l.-r.) astronauts Michael J. Smith, pilot; Ronald E. McNair, mission specialist; and Francis R. (Dick) Scobee, mission commander. Photo credit: NASA

S85-40173 (5 Sept. 1985) --- In Johnson Space Center’s (JSC) Astronaut Office, astronaut F. Richard (Dick) Scobee, STS-51L mission commander, takes a break from training for his upcoming space mission. EDITOR’S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S85-40174 (5 Sept. 1985) --- In Johnson Space Center’s (JSC) Astronaut Office, astronaut Michael J. Smith, STS-51L pilot, looks over part of the flight plan for his upcoming space mission. EDITOR’S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on January 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S86-25180 (October 1985) --- Sharon Christa McAuliffe, STS-51L citizen observer/payload specialist, representing the Teacher-in-Space Project, floats forward and upward during a few moments of weightlessness aboard a KC-135 aircraft. The flight is part of her training for the scheduled five-day flight aboard the Challenger in January of next year. Barbara R. Morgan, backup payload specialist for STS-51L, is partially visible in the background. The photo was taken by Keith Meyers of the New York Times. Photo credit: NASA

51L-S-127 (31 Jan. 1986) --- A wide angle lens was used to capture only a portion of the crowd gathered for memorial services for the seven members of the STS-51L Challenger crew at the Johnson Space Center. President Ronald Reagan speaks at the lectern at far left edge of the frame. The photographer for the picture was positioned on a large platform erected to accommodate the many members of the news media on hand for the event. Photo credit: NASA

51L-S-029 (28 Jan. 1986) --- Crew members of the STS-51L mission are seated for breakfast launch morning in the Operations and Checkout Building prior to liftoff of the space shuttle Challenger scheduled for 9:38 a.m. The launch was scheduled for Jan. 27, 1986, but was delayed 24 hours due to unacceptable cross winds. Crew members left to right are Ellison S. Onizuka, mission specialist; Sharon Christa McAuliffe, payload specialist; Michael J. Smith, pilot; Francis R. Scobee, commander; Judith A. Resnik and Dr. Ronald E. McNair, mission specialists; and Gregory D. Jarvis, payload specialist. EDITOR?S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S86-30504 (16 April 1986) --- A 4,000 pound, 11' x 20' piece of the aft center segment tang joint of the space shuttle Challenger's right-hand solid rocket booster is off loaded from the Stena Workhorse after its recovery on April 13, 1986. The burned out area is 15" x 28". Photo credit: NASA

S86-30363 (13 March 1986) --- Deep Drone Dive #52 March 13, 1986, OCC contact 191 Photosea 1200 camera. (fc)

S85-44459 (19 Nov. 1985) --- Sharon Christa McAuliffe, seated behind 51-L pilot Michael J. Smith, prepares to strap herself into the mission specialists position in the Shuttle Mission Simulator (SMS) as part of her training for the 51-L mission. Photo credit: NASA

S86-30503 (16 April 1986) --- A 4,000 pound, 11' x 20' piece of the aft center segment tang joint of the space shuttle Challenger's right-hand solid rocket booster is off loaded from the Stena Workhorse after its recovery on April 13, 1986. The burned out area is 15" x 28". Photo credit: NASA

S86-29994 (17 & 19 March 1986) --- OOC #195, 292, 301 March 17 and March 19, SRB recovery operations. (FRS. 0X-9) (bg)

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.)

S85-40075 (12 Sept. 1985) --- Teacher-in-Space participant Christa McAuliffe is pictured during her briefing on suit and personal hygiene equipment to be used on the STS-51L mission. Photo credit: NASA

Teacherin-Space participant Christa McAuliffe (right) is briefed on her suit and on personal hygiene equipment to be used on the STS 51L Mission. The briefing was conducted by Laura Louviere (center).

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.)

S86-25183 (for release January 1986) --- Sharon Christa McAuliffe, STS-51L payload specialist representing the Teacher-in-Space Project, descends from a mock-up of the space shuttle using a sky-genie device during an emergency training session in the Johnson Space Center?s (JSC) Shuttle Mock-up and Integration Laboratory. The photograph was taken by Keith Meyers of the New York Times. EDITOR?S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S86-25196 (January 1986) --- Sharon Christa McAuliffe, STS-51L citizen observer/payload specialist, gets a preview of microgravity during a special flight aboard NASA?s KC-135 ?zero gravity? aircraft. McAuliffe will represent the Teacher-in-Space Project aboard the space shuttle Challenger when it launches later this month. This photograph was taken by Keith Meyers of the New York Times. EDITOR?S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S85-39979 (10 Sept. 1985) --- Two teachers training for participation in the STS-51L flight get their first introduction to space food during an orientation session in the life sciences building at the Johnson Space Center (JSC). Sharon Christa McAuliffe (left) chews on a morsel while Barbara R. Morgan reaches for a bite. Dr. C.T. Bourland of Technology, Incorporated, looks on. McAuliffe was chosen from among ten finalists as prime citizen observer payload specialist and Morgan was named as backup for the STS-51L flight. Photo credit: NASA

S86-30460 (9 Jan. 1986) --- NASA's STS-51L crew members pose for photographs during a break in countdown training at the White Room, Launch Complex 39, Pad B. Left to right are Teacher-in-Space payload specialist Sharon Christa McAuliffe; payload specialist Gregory Jarvis; and astronauts Judith A. Resnik, mission specialist; Francis R. (Dick) Scobee, mission commander; Ronald E. McNair, mission specialist; Mike J. Smith, pilot; and Ellison S. Onizuka, mission specialist. EDITOR'S NOTE: The STS-51L crew lost their lives in an explosion, onboard the space shuttle Challenger, following launch Jan. 28, 1986. Photo credit: NASA

S85-26106 (25 Jan. 1985) --- Astronaut Gregory Jarvis gets a familiarization session in weightlessness aboard a KC-135 "zero gravity" aircraft. Jarvis was originally assigned as payload specialist to STS-51D but was reassigned to STS-51L. Photo credit: NASA

S85-44834 (20 Nov. 1985) --- This flying human chain represents prime and backup payload specialists for two upcoming STS missions. The group, representing trainees for STS-61C later this year and STS-51L early next year, shared some 40 parabolas in NASA?s KC-135, ?Zero-G? aircraft on Nov. 20, 1985. Left to right are Gerard Magilton, RCA backup payload specialist for STS-61C; Sharon Christa McAuliffe, payload specialist/teacher citizen observer for STS-51L; U.S. Representative Bill Nelson (D., Florida), scheduled for 61C; Barbara R. Morgan, backup to McAuliffe; and Robert J. Cenker, RCA payload specialist for 61C. The photo was taken by Otis Imboden. Photo credit: NASA

51L-S-156 (28 Jan. 1986) --- The space shuttle Challenger lifted off from Pad 39B Jan. 28, 1986 at 11:38 a.m. (EST) with a crew of seven astronauts and the Tracking and Data Relay Satellite (TDRS). An accident 73 seconds after liftoff claimed both crew and vehicle. Photo credit: NASA

S86-25964 (31 Jan. 1978) --- Astronaut Ellison S. Onizuka. Photo credit: NASA (NOTE: Astronaut Onizuka lost his life in the Jan. 28, 1986, STS-51L space shuttle Challenger accident, along with six other crew members.)

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

S86-25279 (November 1985) --- Sharon Christa McAuliffe, STS-51L payload specialist, has homework of her own to do as she prepares for a January 1986 flight. Photo by Keith Meyers of the New York Times. Photo credit: NASA

S85-40030 (November 1985) --- Payload specialist Sharon Christa McAuliffe is briefed on launch/entry helmets by crew systems technician Alan M. Rochford in the Johnson Space Center’s crew systems lab. McAuliffe is one of seven crew members in training for STS-51L flight scheduled for January 1986. Photo credit: NASA

S85-40031 (November 1985) --- Payload specialist Sharon Christa McAuliffe is briefed on launch/entry helmets by crew systems technician Alan M. Rochford in the Johnson Space Center’s crew systems lab. McAuliffe is one of seven crew members in training for STS-51L flight scheduled for January 1986. Photo credit: NASA

S85-40029 (November 1985) --- Payload specialist Sharon Christa McAuliffe is briefed on launch/entry helmets by crew systems technician Alan M. Rochford in the Johnson Space Center’s crew systems lab. McAuliffe is one of seven crew members in training for STS-51L flight scheduled for January 1986. Photo credit: NASA

Teacher-in-Space Participant Christa McAuliffe is briefed on her suit and on personal hygiene equipment to be used on the STS 51L Mission. She is standing in front of a table with several of the items to be used on the flight, including one can labeled DIAL and one can labeled BAN.

S86-29888 (20 March 1986) --- Stena workhorse arrival and offload of SRB. Trident Basin. (112) (st)

S85-42472 (16 Oct. 1985) --- Teacher-in-Space trainees on the KC-135 for zero-G training. Sharon Christa McAuliffe, right, and Barbara R. Morgan, play leap-frog in the temporary weightlessness of the KC-135. Photo credit: NASA

S86-28888 (14 Feb. 1986) --- NASA astronaut Robert Crippen points out Discovery tile work in the Vehicle Assembly Building to the Presidential Commission on the Space Shuttle Challenger Accident. The commission was taken to the facility on Feb. 14, 1986 as part of their investigation. Photo credit: NASA

S86-28889 (14 Feb. 1986) --- Kennedy Space Center Director Richard Smith points out a portion of a solid rocket booster segment to astronaut Sally Ride and to the chairman of the Presidential Commission on the Space Shuttle Challenger Accident, William P. Rogers. The commission was taken to various booster storage and handling facilities at KSC on Feb. 14, 1986 as part of the failure investigation. Photo credit: NASA

Teacher-in-Space trainees on the KC-135 for Zero-G training. Sharon Christa McAuliffe experiences a few moments of weightlessness provided by the KC-135. She and Bob Mayfield, a JSC Aerospace Education Specialist, are previewing a Molecular Mixing Experiment which was designed to demonstrate differences of separation process in 1-G and Zero-G.

S85-40510 & S85-40511 (23 Sept. 1985) --- Two women representing the Teacher-in-Space Project undergo training in preparation for the 51-L mission in two photographs made in the Johnson Space Center’s mission simulation and training facility. In S85-40510, Sharon Christa McAuliffe (second right), prime crew member; and Barbara R. Morgan (second left), backup, are briefed in the shuttle mission simulator’s instruction station by Jerry Swain, right, instruction team leader. Others pictured are Michelle Brekke (far left) of the payload specialists’ office and Patricia A. Lawson (lower left foreground). Astronaut Ellison S. Onizuka, in S85-40511, assists Morgan with a head set as the two trainees are familiarized with launch and entry stations in the motion base shuttle mission simulator (SMS). The citizen observer (McAuliffe) is scheduled to be seated on the middeck. This picture, however, was taken at the mission specialists’ station on the flight deck. Photo credit: NASA

S85-40510 & S85-40511 (23 Sept. 1985) --- Two women representing the Teacher-in-Space Project undergo training in preparation for the 51-L mission in two photographs made in the Johnson Space Center’s mission simulation and training facility. In S85-40510, Sharon Christa McAuliffe (second right), prime crew member; and Barbara R. Morgan (second left), backup, are briefed in the shuttle mission simulator’s instruction station by Jerry Swain, right, instruction team leader. Others pictured are Michelle Brekke (far left) of the payload specialists’ office and Patricia A. Lawson (lower left foreground). Astronaut Ellison S. Onizuka, in S85-40511, assists Morgan with a head set as the two trainees are familiarized with launch and entry stations in the motion base shuttle mission simulator (SMS). The citizen observer (McAuliffe) is scheduled to be seated on the middeck. This picture, however, was taken at the mission specialists’ station on the flight deck. Photo credit: NASA

S86-25293 (30 Oct. 1985) --- Barbara R. Morgan and Sharon Christa McAuliffe (right) are pictured during a visit to NASA's Kennedy Space Center (KSC) Launch Complex 39 to witness the launch of the space shuttle Challenger. McAuliffe is scheduled to launch aboard the space shuttle Challenger, STS-51L mission, herself early next year as the United States? first in-space citizen observer. Morgan is the backup for the Teacher-in-Space Project?s payload specialist position. The photo was taken by Keith Meyers of the New York Times. EDITOR'S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S86-25186 (December 1985) --- Five members of the prime crew for NASA?s STS-51L mission and a backup crew member are briefed during a training session in the Johnson Space Center?s (JSC) Shuttle Mock-up and Integration Laboratory. From left to right are astronaut Ellison S. Onizuka, mission specialist; Ronald E. McNair, mission specialist; Gregory D. Jarvis, Hughes payload specialist; Judith A. Resnik, mission specialist; Sharon Christa McAuliffe, citizen observer/payload specialist representing the Teacher-in-Space Project; and Barbara R. Morgan, backup payload specialist. The photograph was taken by Keith Meyers of the New York Times. EDITOR?S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S86-25254 (January 1986) --- Payload specialists in training for STS-51L take a break in shuttle emergency egress training at the Johnson Space Center's (JSC) Shuttle Mock-up and Integration Laboratory. Left to right are Gregory Jarvis of Hughes, Sharon Christa McAuliffe and Barbara Morgan of the Teacher-in-Space Project. McAuliffe was selected as NASA's first citizen observer in the Space Shuttle Program and Morgan was named her backup. The photo was taken by Keith Meyers of the New York Times. EDITOR?S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S86-25294 (30 Oct. 1985) --- Barbara R. Morgan and Sharon Christa McAuliffe (right) are pictured during a visit to NASA's Kennedy Space Center (KSC) Launch Complex 39 to witness the launch of the space shuttle Challenger. McAuliffe is scheduled to launch aboard the space shuttle Challenger, STS-51L mission, herself early next year as the United States? first in-space citizen observer. Morgan is the backup for the Teacher-in-Space Project?s payload specialist position. The photo was taken by Keith Meyers of the New York Times. EDITOR?S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

S86-25199 (September 1985) --- Three members of the STS-51L prime crew and a backup crew member walk away from the flight line at nearby Ellington Field following flights in the T-38 jet trainers seen in the background. Sharon Christa McAuliffe (center right), payload specialist/citizen observer for the Teacher-in-Space Project, and Barbara R. Morgan (center left), her backup, are flanked by astronauts Francis R. (Dick) Scobee (right), mission commander, and Michael J. Smith, pilot. The photo was taken by Keith Meyers of the New York Times. EDITOR?S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

NASA’s Kennedy Space Center in Florida paid tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other astronauts who lost their lives while furthering the cause of exploration and discovery, during the agency's Day of Remembrance on Jan. 27, 2022. Lowell Grissom, brother of fall astronaut Virgil “Gus” Grissom, speaks during a ceremony at the Center for Space Education at the Kennedy Space Center Visitor Complex.

NASA’s Kennedy Space Center in Florida paid tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other astronauts who lost their lives while furthering the cause of exploration and discovery, during the agency's Day of Remembrance on Jan. 27, 2022. From left, Lowell Grissom, brother of Virgil “Gus” Grissom; Kathie Scobee Fulgham, daughter of Challenger Commander Francis R. Scobee; and Sheryl Chafee, daughter of Apollo 1 astronaut Roger Chafee, place a wreath in front of on-screen images of NASA astronauts who have perished in the line of duty. The ceremony was held in the Center for Space Education at Kennedy’s Visitor Complex in Florida.

A wreath is placed in front of the Space Mirror Memorial at NASA’s Kennedy Space Center Visitor Complex during the NASA Day of Remembrance on Jan. 27, 2022. Kennedy Space Center in Florida paid tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other astronauts who lost their lives while furthering the cause of exploration and discovery.

NASA’s Kennedy Space Center in Florida paid tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other astronauts who lost their lives while furthering the cause of exploration and discovery, during the agency's Day of Remembrance on Jan. 27, 2022. From left, Lowell Grissom, brother of Virgil “Gus” Grissom; Sheryl Chafee, daughter of Apollo 1 astronaut Roger Chafee; and Kathie Scobee Fulgham, daughter of Challenger Commander Francis R. Scobee, place carnations on the fence in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex.

A wreath is placed in front of the Space Mirror Memorial at NASA’s Kennedy Space Center Visitor Complex during the NASA Day of Remembrance on Jan. 27, 2022. Kennedy Space Center in Florida paid tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other astronauts who lost their lives while furthering the cause of exploration and discovery.

NASA’s Kennedy Space Center in Florida paid tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other astronauts who lost their lives while furthering the cause of exploration and discovery, during the agency's Day of Remembrance on Jan. 27, 2022. Kennedy Deputy Director Kelvin Manning speaks during a ceremony at the Center for Space Education at the Kennedy Space Center Visitor Complex.

A wreath is on display at the Space Mirror Memorial at NASA’s Kennedy Space Center Visitor Complex in Florida during the annual Day of Remembrance ceremony on Thursday, Jan. 25, 2024, honoring fallen astronauts who lost their lives while furthering the cause of exploration and discovery including the crews of Apollo 1, Challenger STS-51L, and Columbia STS-107.

S85-28161 (1 March 1985) --- Astronauts Gregory Jarvis, left, and L. William Butterworth take a breather from training activities in Johnson Space Center’s (JSC) shuttle mock-up and integration laboratory. Jarvis and Butterworth, both Hughes Co. payload specialists, were originally assigned as payload specialists to STS-51D but were reassigned to STS-51L. Photo credit: NASA

Astronauts Memorial Foundation board member Karen Bassett Stevenson and daughter of Charles Bassett II, delivers remarks honoring fallen astronauts who lost their lives while furthering the cause of exploration and discovery during NASA’s annual Day of Remembrance on Thursday, Jan. 25, 2024, at the Space Mirror Memorial at the agency’s Kennedy Space Center Visitor Complex in Florida. Those remembered include the crews of Apollo 1, Challenger STS-51L, and Columbia STS-107.

Family members of fallen astronauts Kathie Scobee Fulgham, Lowell Grissom, Sheryl Chaffee, and Karen Bassett Stevenson place a wreath at the Space Mirror Memorial at NASA’s Kennedy Space Center Visitor Complex in Florida on Thursday, Jan. 25, 2024, during the agency’s Day of Remembrance. The annual tradition pays tribute to fallen astronauts and astronaut candidates who lost their lives while furthering the cause of exploration and discovery, including the crews of Apollo 1, Challenger STS-51L, and Columbia STS-107.

Kathie Scobee Fulgham, Astronauts Memorial Foundation chair and daughter of Challenger astronaut Francis “Dick” Scobee, delivers remarks honoring fallen astronauts who lost their lives while furthering the cause of exploration and discovery during NASA’s annual Day of Remembrance on Thursday, Jan. 25, 2024, at the Space Mirror Memorial at the agency’s Kennedy Space Center Visitor Complex in Florida. Those remembered include the crews of Apollo 1, Challenger STS-51L, and Columbia STS-107.

STS-26 Discovery, Orbiter Vehicle (OV) 103, rises into a cloudy sky and heads for Earth orbit atop the external tank (ET) as exhaust plumes billow from the two solid rocket boosters (SRBs) during liftoff from Kennedy Space Center (KSC) Launch Complex (LC) pad 39B. STS-26 marks OV-103's first flight since September 1985 and NASA's first manned mission since 51L Challenger accident, 01-28-86.

CAPE CANAVERAL, Fla. -- A wreath is displayed at the foot of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida during a ceremony to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. NASA/Jack Pfaller

S86-25182 (for release January 1986) --- Sharon Christa McAuliffe, STS-51L citizen observer/payload specialist, prepares to remove her helmet after participating in emergency egress training in the shuttle mock-up and integration lab at the Johnson Space Center. McAuliffe will represent the Teacher-in-Space Project aboard the Challenger when it launches in late January. The photo was taken by Keith Meyers of the New York Times. Photo credit: NASA

CAPE CANAVERAL, Fla. -- Michael McCulley, former astronaut and chairman of the Astronauts Memorial Foundation, speaks to a crowd gathered in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. NASA/Jack Pfaller

S86-25188 (December 1985) --- Sharon Christa McAuliffe, a school teacher Concord New Hampshire, surveys a ground training replica of the quarters she?ll be using in space when the space shuttle Challenger taxis two women and five men into space in January of 1986. The STS-51L citizen observer/payload specialist is in training at the Johnson Space Center, representing the Teacher-in-Space Project. The photo was taken by Keith Meyers of the New York Times. Photo credit: NASA

CAPE CANAVERAL, Fla. -- A crowd gathers in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- A wreath is displayed at the foot of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida during a ceremony to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. Photo credit: NASA/Kim Shiflett

S86-26436 (31 Jan. 1986) --- The United States flag, in front of the Johnson Space Center’s (JSC) project management building, flies at half-mast in memory of the seven space shuttle Challenger crew members who lost their lives on Jan. 28, 1986. Earlier today, memorial services about 100 yards from the flag drew thousands of JSC employees, friends and family of the STS-51L astronauts and payload specialists. Photo credit: NASA

CAPE CANAVERAL, Fla. -- A crowd lays roses and pays their respects space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. They gathered for a memorial ceremony in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. Photo credit: NASA/Kim Shiflett

S86-25234 (January 1986) --- STS-51L Payload Specialist Sharon Christa McAuliffe egresses the rear station of a NASA T-38 jet trainer at Ellington Base near the Johnson Space Center, where the Teacher-in-Space Project top finalist is in training for the January mission. The photo was taken by Keith Meyers of the New York Times. Photo credit: NASA

CAPE CANAVERAL, Fla. -- Former astronaut and NASA Kennedy Space Center Director Bob Cabana speaks to a crowd gathered in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- A crowd gathers in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. NASA/Jack Pfaller

S85-40668 (18 Sept. 1985) --- The two teachers, Sharon Christa McAuliffe (left) and Barbara R. Morgan have hands-on experience with an Arriflex motion picture camera following a briefing on space photography. The two began training Sept. 10, 1985 with the STS-51L crew and learning basic procedures for space travelers. The second week of training included camera training, aircraft familiarization and other activities. Photo credit: NASA

S85-46693 (26 Dec. 1985) --- Sharon Christa McAuliffe (right), the Teacher-in-Space payload specialist assigned to the STS-51L mission, and her backup, Barbara R. Morgan pose for photos after training in the shuttle mock-up and integration laboratory at JSC. The shuttle crew compartment, in a launch mode, can be seen in the background. Photo credit: NASA

CAPE CANAVERAL, Fla. -- NASA Associate Administrator for Space Operations William Gerstenmaier speaks to a crowd gathered in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Rick Soria, the 2009 Alan Shepard Technology in Education Award winner, speaks to a crowd gathered in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Former astronaut and Chairman of The Astronauts Memorial Foundation Michael McCulley speaks to a crowd gathered in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- NASA Associate Administrator for Space Operations William Gerstenmaier speaks to a crowd gathered in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Former astronaut and NASA Kennedy Space Center Director Bob Cabana speaks to a crowd gathered in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- Stephen Feldman, president of the Astronauts Memorial Foundation, speaks to a crowd gathered in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. NASA/Jack Pfaller

June Scobee Rodgers (center), widow of STS-51L commander Dick Scobee; daughter Kathie Scobee Fulgham; son U.S. Air Force Brig. Gen. Richard Scobee; and other family members and invited guests listen to remarks during Kennedy Space Center's Day of Remembrance ceremony. Held this year in the Center for Space Education at the Kennedy Space Center Visitor Complex in Florida, the annual event honors the contributions of all astronauts who lost their lives in the quest for space exploration.

S85-40669 (18 Sept. 1985) --- The two teachers, Sharon Christa McAuliffe (left) and Barbara R. Morgan have hands-on experience with an Arriflex motion picture camera following a briefing on space photography. The two began training Sept. 10, 1985 with the STS-51L crew and learning basic procedure for space travelers. The second week of training included camera training, aircraft familiarization and other activities. Morgan adjusts a lens as a studious McAuliffe looks on. Photo credit: NASA

S85-41033 (18 Sept. 1985) --- Two women in training at JSC as part of the Teacher-in-Space Project and a position on NASA’s STS-51L mission learn handling of the Arriflex motion picture camera used on shuttle flights. Sharon Christa McAuliffe (left) was recently named as prime crew member for the 51-L flight; and Barbara R. Morgan, here lending help with camera’s lens, will serve as backup. The photograph was taken by Otis Imboden. Photo credit: NASA

CAPE CANAVERAL, Fla. -- Mick Ukleja, from The Astronauts Memorial Foundation, provides the invocation in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. Photo credit: NASA/Kim Shiflett

CAPE CANAVERAL, Fla. -- A crowd gathers in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. Photo credit: NASA/Kim Shiflett

S86-25251 (January 1986) --- Sharon Christa McAuliffe, payload specialist for STS-51L, takes a breather following a busy day?s training in the Johnson Space Center?s Shuttle Mock-up and Integration Laboratory. McAuliffe, a New Hampshire school teacher, was chosen from among ten finalists in the Teacher-in-Space Project to serve as citizen observer aboard the Challenger. This photo was taken by Keith Meyers of the New York Times. Photo credit: NASA

S85-40671 (18 Sept. 1985) --- The two teachers, Barbara R. Morgan and Sharon Christa McAuliffe (out of frame) have hands-on experience with an Arriflex motion picture camera following a briefing on space photography. The two began training Sept. 10, 1985 with the STS-51L crew and learning basic procedures for space travelers. The second week of training included camera training, aircraft familiarization and other activities. Morgan zeroes in on a test subject during a practice session with the Arriflex. Photo credit: NASA

S85-40171 (5 Sept. 1985) --- Astronaut Judith A. Resnik, in her office, at the Johnson Space Center (JSC). Resnik is taking a break from training for her upcoming space mission. EDITOR’S NOTE: The STS-51L crew members lost their lives in the space shuttle Challenger accident moments after launch on Jan. 28, 1986 from the Kennedy Space Center (KSC). Photo credit: NASA

CAPE CANAVERAL, Fla. -- A crowd gathers in front of the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Florida to honor space shuttle Challenger's STS-51L crew members who gave their lives for while furthering the cause of exploration and discovery. 2011 marks the 25th anniversary of the loss of Challenger, which broke apart over the Atlantic Ocean 73 seconds into flight on Jan. 28, 1986. NASA/Jack Pfaller

Flight controllers in JSC's Mission Control Center (MCC) Bldg 30 flight control room (FCR) listen to a presentation by STS-26 crewmembers on the fourth day of Discovery's, Orbiter Vehicle (OV) 103's, orbital mission. Instrumentation and Communications Officers (INCOs) Harold Black (left foreground) and John F. Muratore and other controllers view a television (TV) transmission of the crew on a screen in front of the FCR as each member relates some inner feelings while paying tribute to the 51L Challenger crew.