STS-90

STS-90
Name	STS-90
Operator	National Aeronautics and Space Administration
Spacecraft	Space Shuttle Columbia
Launch date	April 17, 1998
Landing date	May 3, 1998
Mission duration	15 days, 21 hours, 50 minutes, 56 seconds
Orbit	Low Earth orbit

STS-90 STS-90 was a 1998 United States spaceflight conducted by National Aeronautics and Space Administration using the Space Shuttle Columbia to perform a neuroscience-focused laboratory mission. The flight carried investigators from institutions including the Johns Hopkins University School of Medicine, Baylor College of Medicine, and the University of Pennsylvania to study the effects of microgravity on nervous system function using model organisms and human subjects.

Mission overview

The mission, designated Neurolab, integrated experiments from the International Space Station precursor research programs and cooperative studies with European Space Agency, Canadian Space Agency, and Japan Aerospace Exploration Agency partners. Objectives included assessing vestibular physiology, neurovestibular adaptation, neurodevelopment, and neurophysiology using equipment such as the Spacelab modules, specialized centrifuges, and behavioral testing rigs developed by research teams at Massachusetts Institute of Technology, California Institute of Technology, and Scripps Research Institute. The flight advanced collaborations with clinical centers like Mayo Clinic, Cleveland Clinic, and Mount Sinai Hospital to translate findings toward terrestrial applications in neurology and otolaryngology.

Crew

The seven-person complement combined veteran astronauts and payload specialists from academia and National Aeronautics and Space Administration centers. Crew roles included commander, pilot, mission specialists, and payload specialists drawn from institutions including Woods Hole Oceanographic Institution, Argonne National Laboratory, Brookhaven National Laboratory, and the National Institutes of Health. Crew training interfaced with programs at Johnson Space Center and Kennedy Space Center, and individual members had prior flight experience on missions like STS-61-B, STS-32, STS-44, and STS-71. Collaborations extended to researchers affiliated with Harvard Medical School, University of California, San Diego, Stanford University School of Medicine, and University of Colorado Anschutz Medical Campus.

Payload and experiments

Payload elements centered on life sciences hardware including the Spacelab module, the EU-provided Biorack hardware, and custom apparatus from European Space Agency laboratories and Canadian Space Agency life sciences groups. Experiments encompassed neurophysiology suites for vestibular testing derived from work at Imperial College London, cerebellar studies relying on methodologies from University College London, and developmental neurobiology protocols adopted from Max Planck Society researchers. Model organisms included rodents maintained in enclosures based on designs from Scripps Institution of Oceanography and invertebrate modules influenced by Cold Spring Harbor Laboratory protocols. Human research evaluated sensorimotor adaptation, circadian effects studied in conjunction with Smithsonian Astrophysical Observatory chronobiology teams, and electrophysiological monitoring developed with Rutgers University and University of Texas Southwestern Medical Center collaborators.

Flight timeline

Launch occurred from Kennedy Space Center on April 17, 1998, following final processing in OPF and assembly at the Vehicle Assembly Building. Early mission days focused on activation of life sciences racks, animal husbandry, and calibration of vestibular rigs overseen by principal investigators from Baylor College of Medicine and Johns Hopkins University. Mid-mission operations included rodent behavioral testing, electrophysiological recordings, and human sensorimotor sessions coordinated with flight surgeons from Johnson Space Center. Late mission activities emphasized sample preservation using cryogenic freezers developed with Jet Propulsion Laboratory input and preparation for return to payload integration teams at NASA Ames Research Center and Marshall Space Flight Center.

Mission outcomes and significance

Results provided insights into vestibular plasticity relevant to clinicians at Stanford University School of Medicine and Columbia University Irving Medical Center, and informed countermeasures proposed by European Space Agency life sciences advisory groups. Data influenced terrestrial research at institutions including University of Michigan Medical School, University of Pittsburgh School of Medicine, and Yale School of Medicine on balance disorders, neurodevelopmental processes, and rehabilitation strategies. Outcomes contributed to design recommendations for International Space Station neuroscience facilities, guided sensorimotor protocols used in subsequent flights like STS-107 and STS-120, and supported translational projects funded by the National Institutes of Health and National Science Foundation.

Launch and landing

Launch vehicle operations involved teams from United Space Alliance and preflight coordination with Federal Aviation Administration range safety units. Columbia completed 256 orbits before entry and landing at Kennedy Space Center Shuttle Landing Facility on May 3, 1998. Post-landing activities included payload offload and biospecimen transfer to laboratories at NASA Johnson Space Center and shipment to participating research centers such as Penn State College of Medicine and Duke University School of Medicine for analysis.

Mission insignia and mission patch

The mission insignia incorporated symbolic elements referencing neuroscience research and the international collaboration among agencies including European Space Agency, Canadian Space Agency, and Japan Aerospace Exploration Agency. The patch design process involved consultation with artists affiliated with Smithsonian Institution and approval by NASA insignia committees, and the emblem is archived in collections at National Air and Space Museum and Smithsonian Institution Archives.

Category:Space Shuttle missions Category:1998 in spaceflight