This was a list of missions for the space shuttle program in the 20th and 21st centuries for NASA. On these missions, the shuttles were used for delivering satellites into Earthorbit for geophysical studies and for national defense, for resupplying the International Space Station, and for studying the Human body in microgravity. Each of these missions was given the acronym STS ("Space Transportation System") and a specific number by NASA. Early shuttle missions had a capital letter after the number.
Each of the mission insignias were designed by the mission crews and were approved by NASA. The insignias were designed with a theme appropriate for each mission. The last names of the astronauts were placed on each insignia.
The shuttle for this mission was the Challenger. This was the first time that a shuttle was staffed with seven crew members, and the first time a crew was equipped with an IMAX camera for documentary film making. For further information, see STS-41G at Wikipedia.
The shuttle for this mission was the "Discovery". This mission was the first in the Space Shuttle program following the loss of the Challenger two years before. For further information, see STS-26 at Wikipedia.
The shuttle for this mission was the Columbia. The crew performed microgravity experiments during their stay in space. On reentry, the Columbia was destroyed when the hull breached. There were no survivors. For further information, see STS-107 and micro-g environment at Wikipedia.