The space station is viewed from the SpaceX Cargo Dragon during its automated approach before docking. Credit: NASA TV
While the International Space Station was traveling more than 260 miles over the South Pacific Ocean, a SpaceX Dragon cargo spacecraft autonomously docked to the space-facing side of the orbiting laboratorys Harmony module at 3:41 a.m. EST, Wednesday, Dec. 22. NASA astronauts Raja Chari and Thomas Marshburn were monitoring docking operations for Dragon.
The Dragon launched on SpaceXs 24th contracted commercial resupply mission at 5:07 a.m. EST, Tuesday, Dec. 21 from Launch Complex 39A at NASAs Kennedy Space Center in Florida. After Dragon spends about one month attached to the space station, the spacecraft will return to Earth with cargo and research.
Among the science experiments Dragon is delivering to the space station are:
Bioprinting bandagesBioprinting uses viable cells and biological molecules to print tissue structures. The German Aerospace Center studyBioprint FirstAiddemonstrates a portable, handheld bioprinter that uses a patients own skin cells to create a tissue-forming patch to cover a wound and accelerate the healing process. On future missions to the Moon and Mars, bioprinting such customized patches could help address changes in wound healing that can occur in space and complicate treatment. Personalized healing patches also have potential benefits on Earth, providing safer and more flexible treatment anywhere needed.
Improving delivery of cancer drugsMonoclonal antibodies, used to treat a wide range of human diseases, do not dissolve easily in liquid and so typically must be given intravenously in a clinical setting.The Center for the Advancement of Science in Space Protein Crystal Growth 20 (CASIS PCG 20) experimentcontinues work on crystallizing a monoclonal antibody, pembrolizumab, that Merck Research Labs developed. It is the active ingredient in Keytruda, a drug that targets multiple cancers. Scientists analyze these crystals to learn more about the structure and behavior of the component to create drug formulations that can be administered at a doctors office or even at home.
Assessing infection riskScientists have observed that spaceflight sometimes increases the virulence of potentially harmful microbes and reduces human immune function, increasing the risk for infectious disease.Host-Pathogenassesses space-induced changes in immune status by culturing cells collected from crew members before, during, and after spaceflight with both normal bacteria and bacteria grown under simulated spaceflight conditions. Results could help assess the potential risk infectious microbes may pose and may support development of countermeasures. This could improve care for those with compromised immune systems on Earth.
Roots, shoots, and leavesMulti Variable Platform (MVP) Plant-01profiles and monitors the development of the shoots and roots of plants in microgravity. Plants could serve as a vital part of human life support systems for long-duration spaceflight and habitation of the Moon and Mars. However, space-grown plants experience stress from various factors and recent studies indicate changes in plant gene expression in response to those stressors. Improved understanding of these changes could enable the design of plants that are better suited for growth in spaceflight environments.
Toward lunar laundromatsAstronauts on the space station wear items of clothing several times, then replace them with new clothes delivered on resupply missions. Limited cargo capacity makes this a challenge, and resupply is not an option for longer missions, such as those to the Moon and Mars. In a collaboration with NASA, Procter & Gamble has developed Tide Infinity, a fully degradable detergent specifically designed for use in space, and theP&G Telescience Investigation of Detergent Experiments (PGTIDE) study the performance of its stain removal ingredients and the formulations stability in microgravity. Once proven in space, Tide plans to use the new cleaning methods and detergent to advance sustainable, low-resource-use laundry solutions on Earth.
Parts made in spaceTurbine Superalloy Casting Module (SCM)tests a commercial manufacturing device that processes heat-resistant alloy parts in microgravity. Alloys are materials made up of at least two different chemical elements, one of which is a metal. Researchers expect more uniform microstructures and improved mechanical properties in superalloy parts processed in microgravity compared to those processed on Earth. These superior materials could improve the performance of turbine engines in industries such as aerospace and power generation on Earth.
Students and citizens as space scientistsStudents enrolled in institutions of higher learning can design and build microgravity experiments as part of NASAs Student Payload Opportunity with Citizen Science (SPOCS). As part of their experiments, selected teams include students in kindergarten through 12th grade as citizen scientists. Citizen science allows individuals who are not professional scientists to contribute to real-world research. TheNASA STEM on Stationproject is funding experiments flying on this SpaceX resupply mission, including a study on antibiotic resistance in microgravity from Columbia University in New York and one on how microgravity affects bacteria-resistant polymers from the University of Idaho in Moscow, Idaho.
These are just a few of the hundreds of investigations currently being conducted aboard the orbiting laboratory in the areas of biology and biotechnology, physical sciences, and Earth and space science. Advances in these areas will help keep astronauts healthy during NASAsArtemismissions to the Moon and long-duration space travel and demonstrate technologies for future human and robotic exploration beyond low-Earth orbit to theMoon and Mars.
Learn more about station activities by following thespace station blog,@space_stationand@ISS_Researchon Twitter, as well as theISS FacebookandISS Instagramaccounts.
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Cargo Dragon Docks to Station with Brand New Science - NASA
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