STS-78 was the fifth dedicated Life and Microgravity

Spacelab Spacelab was a reusable laboratory developed by European Space Agency (ESA) and used on certain spaceflights flown by the Space Shuttle. The laboratory comprised multiple components, including a pressurized module, an unpressurized carrier, ...

mission for the

Space Shuttle program The Space Shuttle program was the fourth human spaceflight program carried out by the U.S. National Aeronautics and Space Administration (NASA), which accomplished routine transportation for Earth-to-orbit crew and cargo from 1981 to 2011. I ...

, flown partly in preparation for the

International Space Station The International Space Station (ISS) is the largest modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos (Russia), JAXA ( ...

project. The mission used the Space Shuttle ''Columbia'', which lifted off successfully from Kennedy Space Center's Launch Pad 39B on June 20, 1996. This marked the 78th flight of the Space Shuttle and 20th mission for ''Columbia''.

Crew

Backup crew

Mission objectives

* Research into the effects of long – duration spaceflight on human physiology in preparation for flights on the International Space Station. * 22 life science and microgravity experiments using the Orbiter's pressurised Life & Microgravity Spacelab module (LM2). * Tests into the use of the Orbiter's

Reaction Control System A reaction control system (RCS) is a spacecraft system that uses thrusters to provide attitude control and translation. Alternatively, reaction wheels are used for attitude control. Use of diverted engine thrust to provide stable attitude cont ...

jets to raise the altitude of orbiting satellites.

Mission highlights

During the 16-day, 21-hour mission, the crew of ''Columbia'' assisted in the preparations for the International Space Station by studying the effects of long-duration spaceflight on the human body in readiness for ISS Expeditions, and also carried out experiments similar to those now being carried out on the orbital station. Following launch, ''Columbia'' climbed to an altitude of with an orbital inclination of 39° to the Earth's equator to allow the seven-member flight crew to maintain the same sleep rhythms they were accustomed to on Earth and to reduce vibrations and directional forces that could have affected on-board microgravity experiments. Once in orbit, the crew entered the long pressurized Spacelab module to commence over 40 science experiments to take place during the mission. Not only did these experiments make use of the module's laboratory, but also employed lockers in the middeck section of the orbiter. Thirteen of the experiments were dedicated to studying the effects of microgravity on the human body, whilst another six studied the behaviour of fluids and metals in the almost weightless environment and the production of metallic alloys and protein crystals. The crew also carried out the first ever comprehensive study of sleep patterns in microgravity, research into bone and muscle loss in space, and in-flight fixes to problem hardware on the Bubble, Drop and Particle Unit (BDPU), designed to study fluid physics. The mission also featured a test of a procedure that was later used during the second

Hubble Space Telescope The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most vers ...

servicing mission to raise the telescope's altitude without damaging the satellite's solar arrays. During the test, ''Columbia's'' vernier Reaction Control System jets were gently pulsed to boost the Shuttle's altitude without jarring any of the mission payloads. The test was successful, and was later employed by ''Discovery'' during

STS-82 STS-82 was the 22nd flight of the Space Shuttle ''Discovery'' and the 82nd mission of the Space Shuttle program. It was NASA's second mission to service the Hubble Space Telescope, during which ''Discovery's'' crew repaired and upgraded the tel ...

, and was used multiple times to boost the orbit of the ISS when docked with an orbiter.

Mission anomaly

Although the launch went without any issue, an issue was discovered with the SRB's following recovery. Analysis showed worrying damage to the field joins which was likely caused by hot gases. This similar damage is what caused booster seals abord Space Shuttle ''Challenger'' to break resulting in a break-up mid-flight. The issue did not compromise astronaut safety because there was a hot gas path through the motors field joint but not the capture joint. Despite there being no issue with safety, it did raise questions of a new EPA required cleaning fluid. Due to the issue,

STS-79 STS-79 was the 17th flight of Space Shuttle ''Atlantis'', and the 79th mission of the Space Shuttle program. The flight saw ''Atlantis'' dock with the Russian space station Mir to deliver equipment, supplies and relief personnel. A variety of sc ...

which was meant to dock with the Space Station Mir and return astronaut

Shannon Lucid Shannon Wells Lucid (born January 14, 1943) is an American biochemist and retired NASA astronaut. At one time, she held the record for the longest duration stay in space by an American and by a woman. She has flown in space five times including ...

, was delayed. Options of returning Shannon on a Soyuz were considered, but never followed through as the Shuttle was considered safe and able to return Shannon.

References

External links

NASA mission summary

{{Use American English, date=January 2014 Spacecraft launched in 1996 STS-078