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How new modules and facilities expanded research potential on NASA's International Space Station

Explore how new modules, racks, and specialized facilities on NASA’s International Space Station expanded research potential, enabling diverse experiments in microgravity and increasing access for international and non-NASA users.
  • circa 1998:  An artist's impression of the completed International Space Station.  (Photo by NASA/Space Frontiers/Getty Images)
    circa 1998: An artist's impression of the completed International Space Station. (Photo by NASA/Space Frontiers/Getty Images)

    According to a December 19, 2025, episode of Houston We Have a Podcast Season 1, Episode 406, ISS leaders Laura Shaw and Jennifer Buchli explained how new modules and research facilities expanded the station’s scientific capabilities.

    The additions of international modules and specialized racks allowed a wider range of experiments in microgravity, Earth observation, and astrophysics.

    Modules such as the Japanese Experiment Module and the European Space Agency’s Columbus module provide dedicated spaces for research, while specialized racks and glove boxes support controlled experiments involving combustion, fluids, materials, and biological samples.

    These developments systematically increased the station’s research potential.


    Expanding research capabilities through new modules and facilities on the International Space Station

    Development of Payload Facilities

    The International Space Station vehicle office is responsible for managing the station’s physical systems, which include modules, solar arrays, power distribution, cooling, life support, and crew accommodations.

    The office also oversees payload facilities, which are the infrastructure required to operate experiments in space.

    Payload facilities include structural mounting locations, utilities such as power and data connections, vacuum and pressurized gas capabilities, and systems for controlling thermal conditions.

    These facilities ensure that scientific instruments can function in microgravity while providing the necessary safety measures for the crew.

    The introduction of these payload facilities allowed the station to host experiments continuously and reliably.


    Introduction of EXPRESS Racks and Glove Boxes

    The first EXPRESS racks were launched to the ISS in 2002. These racks provide standardized volumes for mounting experiments and distributing power, cooling, and data connections.

    They support a wide range of experiments, from life sciences to materials research, and are compatible with both US and international modules.

    At the same time, the microgravity science glove box was installed to allow experiments involving hazardous substances.

    The glove box provides containment and utilities such as vacuum and power while permitting crew interaction with materials in a safe environment.

    Together, the EXPRESS racks and glove boxes established a flexible research infrastructure that could be adapted for multiple types of investigations.


    Expansion Through International Modules and Specialized Laboratories

    Additional research modules expanded the ISS’s capabilities further.

    The Japanese Experiment Module, or Kibo, as it is commonly called, and the Columbus module, which belongs to the European Space Agency, offer experiment laboratories exclusive to their partner agencies.

    Specialized racks, to be specific, the Combustion Integration Rack, facilitate the research of fire behavior in microgravity, consisting of liquid, gas, and solid fuels.

    Fluid dynamics, material science, and combustion experiments make use of the furnaces and other specialized equipment.

    The modules and facilities provide research areas with controlled environments that cannot be found on Earth, and the range of studies is from basic physics to Earth observation and agricultural monitoring.

    Little by little, adding to the existing modules and research facilities has made it possible for the continuous scientific operations aboard the ISS.

    Controlled experimental setups in the areas of biology, fluids, combustion, and material science are the microgravity experiments that benefit the most, whereas the Earth- and space-observation instruments take advantage of the station's orbital position.

    The infrastructures that have been combined not only support NASA and international objectives but also provide access for commercial and national laboratory experiments.

    Thus, these advancements have methodically increased the research potential of the station, allowing a wider range of scientific investigations and constant improvements in experimental techniques.


    Stay tuned for more updates.

    TOPICS: NASA ISS research, International Space Station modules, ISS laboratory facilities, Microgravity experiments, NASA International Space Station