Since the loss of STS-51L took place 30 years ago on this date in 1986 I thought I would reflect on the lives of the crew that was lost in that tragedy. These seven astronauts—including the specialties of pilot, aerospace engineers, and scientists—died in the destruction of their spacecraft 73 seconds after launch from the Kennedy Space Center on January 28, 1986. The cause of the accident was a leak at the joint of one of two Solid Rocket Boosters that ignited the main liquid fuel tank. The crew members of the Challenger represented a cross section of the American population in terms of race, gender, geography, background, and religion. The explosion became one of the most significant events of the 1980s, as billions around the world saw the accident on television and empathized with any one of the several crew members killed. Each has a unique story.

The spacecraft commander was Francis R. "Dick" Scobee, the son of Mr. and Mrs. Francis W. Scobee. He was born on May 19, 1939, in Cle Elum, Washington, and graduated from the public high school in Auburn, Washington, in 1957. He then enlisted in the U.S. Air Force (USAF), training as a reciprocating engine mechanic but longing to fly. He took night courses and in 1965 completed a B.S. degree in Aerospace Engineering from the University of Arizona. This made it possible for Scobee to receive an officer's commission and enter the Air Force pilot training program. He received his pilot's wings in 1966 and began a series of flying assignments with the Air Force, including a combat tour in Vietnam. Scobee also married June Kent of San Antonio, Texas, and they had two children, Kathie R. and Richard W., in the early 1960s. He attended the USAF Aerospace Research Pilot School at Edwards Air Force Base, California, in 1972 and thereafter was involved in several test programs. As an Air Force test pilot Scobee flew more than 45 types of aircraft, logging more than 6,500 hours of flight time. In 1978, Scobee entered NASA's astronaut corps and was the pilot of mission STS-41-C, the fifth orbital flight of the Challenger spacecraft, launching from Kennedy Space Center, Florida, on April 6, 1984.

The pilot for the fatal 1986 Challenger mission was Michael J. Smith, born on April 30, 1945 in Beaufort, North Carolina. At the time of the Challenger accident, a commander in the U.S. Navy, Smith had been educated at the U.S. Naval Academy, class of 1967, and received an M.S. in Aeronautical Engineering from the Naval Postgraduate School in 1968. From there he underwent aviator training at Kingsville, Texas, and received his wings in May 1969. After a tour as an instructor at the Navy's Advanced Jet Training Command between 1969 and 1971, Smith flew A-6 Intruders from the USS Kitty Hawk in Southeast Asia. Later he worked as a test pilot for the Navy, flying 28 different types of aircraft and logging more than 4,300 hours of flying time. Smith was selected as a NASA astronaut in May 1980, and a year later, after completing further training, he received an assignment as a Space Shuttle pilot, the position he occupied aboard Challenger. This mission was his first space flight.

Judith A. Resnik was one of three mission specialists on Challenger. Born on April 5, 1949 in Akron, Ohio, Resnik was educated in public schools before attending Carnegie-Mellon University, where she received a B.S. in electrical engineering in 1970, and the University of Maryland, where she took at Ph.D. in the same field in 1977. Resnik worked in a variety of professional positions with the RCA Corporation in the early 1970s and as a staff fellow with the Laboratory of Neurophysiology at the National Institutes of Health in Bethesda, Maryland, between 1974 and 1977. Selected as a NASA astronaut in January 1978, the first cadre containing women, Resnik became the second American woman in orbit during the maiden flight of Discovery, STS-41D, between August 30 and September 5, 1984. During this mission she helped to deploy three satellites into orbit; she was also involved in biomedical research during the mission. Afterward, she began intensive training for the STS-51L mission on which she was killed.

Ronald E. McNair was the second of three mission specialists aboard Challenger. Born on October 21, 1950 in Lake City, South Carolina, McNair was the son of Carl C. McNair, Sr. and Pearl M. McNair. He achieved early success in the segregated public schools he attended as both a student and an athlete. Valedictorian of his high school class, he attended North Carolina A&T State University where in 1971 he received a B.S. degree in Physics. He went on to study Physics at MIT, where he specialized in quantum electronics and laser technology, completing his Ph.D. in 1977. As a student he performed some of the earliest work on chemical HF/DF and high pressure CO lasers, publishing path-breaking scientific papers on the subject. In January 1978, NASA selected him to enter the astronaut cadre, one of the first three African Americans chosen. McNair became the second African-American in space between February 3 and 11, 1984, by flying on the Challenger mission STS-41B.

Ellison S. Onizuka, was the last of the three mission specialists. He had been born in Kealakekua, Kona, Hawaii, on June 24, 1946, of Japanese-American parents. Onizuka served on active duty with the Air Force from 1970 to 1978 when he was selected as a NASA astronaut. Since he was an Air Force officer on detached duty with NASA, Onizuka was a logical choice to serve on the first dedicated Department of Defense classified mission. He was a mission specialist on STS-51C, taking place January 24-27, 1985 on the Discovery orbiter.    

The last two members of the Challenger crew were not officially federal government employees. Gregory B. Jarvis, a payload specialist, worked for the Hughes Aircraft Corp.'s Space and Communications Group in Los Angeles, California, and had been made available for the Challenger flight by his company. Jarvis had been born on August 24, 1944 in Detroit, Michigan. Trained as an engineer, Jarvis began work at Hughes in 1973 and served in a variety of technical positions until 1984 when he was accepted into the astronaut program under Hughes' sponsorship after competing against 600 other Hughes employees for the opportunity. Jarvis' duties on the Challenger flight had revolved around gathering new information on the design of liquid-fueled rockets.

The last member of the crew was Sharon Christa McAuliffe, the first teacher to fly in space. Selected from among more than 11,000 applicants from the education profession for entrance into the astronaut ranks, McAuliffe was born on September 2, 1948, the oldest child of Edward and Grace Corrigan. Her father was at that time completing his sophomore year at Boston College, but not long after he took a job as an assistant comptroller in a Boston department store and the family moved to the Boston suburb of Framingham. As a youth she registered excitement over the Apollo Moon landing program and wrote years later on her astronaut application form that, "I watched the Space Age being born and I would like to participate." NASA selected McAuliffe to be a teacher in space in the summer of 1984 and in the fall she took a year-long leave of absence from teaching and trained for an early 1986 Space Shuttle mission. She had an immediate rapport with the media, and the teacher in space program received tremendous popular attention as a result. It is in part because of the excitement over McAuliffe's presence on Challenger that the accident had such a significant impact on the nation.

All images courtesy of NASA; see more mission imagery online.