SpaceX's ninth cargo flight to the ISS under NASA’s CRS contract will find the firm's Dragon's delivered cargo supporting dozens of the more than 250 science and research investigations during the station’s Expeditions 48 and 49.
These investigations will bring the delivered instruments into play to perform the first-ever DNA sequencing in space and the first international docking adapter for commercial spacecraft, all resultant of the SpaceX Commercial Resupply Services-9 (CRS-9) mission.
SpaceX’s Dragon cargo craft launched at 12:45 a.m. EDT on July 17th via a Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida with almost 5,000 pounds of cargo. The spacecraft will be grappled to the space station at 7:00 a.m. on Wednesday, July 20th, by NASA astronaut Jeff Williams, supported by NASA astronaut Kate Rubins.
DNA testing aboard the space station typically requires collecting samples and then returning them to Earth. The Biomolecule Sequencer seeks to demonstrate, for the first time, that DNA sequencing is feasible in microgravity using a crew-operated, miniaturized device to identify microbes, diagnose diseases, monitor crew health and possibly help detect DNA-based life off the Earth.
Maintaining safe temperatures is difficult in space where there is no atmosphere to moderate the extreme heat and cold provided by direct, unfiltered sunlight. The Phase Change Heat Exchanger, a NASA investigation to test temperature control technology for future spacecraft, uses a continual process of freezing and thawing to maintain temperatures inside a spacecraft, thereby protecting crews and equipment. Additionally, research delivered under the station’s role as a US National Laboratory includes OsteoOmics, a test to determine whether magnetic levitation accurately simulates the free-fall conditions of microgravity by comparing genetic expression in different types of bone cells. The results could well assist the millions of Americans who experience bone less as a result of disease and could contribute to better prevention of, and treatments for, bone loss as a result of diseases such osteopenia and osteoporosis, or from prolonged bed rest. Plus, improved understanding of the mechanisms behind bone loss could lead to better ways to prevent such loss during space missions.
Another National Lab investigation called Heart Cells studies how microgravity changes the human heart and how those changes vary from one individual to another. Future exploration of the moon, asteroids or Mars will require long periods of space travel, which creates increased risk of health problems such as muscle atrophy, including possible atrophy of heart muscle. Heart cells cultured aboard the space station for one month will be analyzed for cellular and molecular changes. Results could advance the study of heart disease and the development of drugs and cell replacement therapy.
Dragon is scheduled to depart the space station Monday, August 29th. After splashdown in the Pacific Ocean, west of Baja California, more than 3,300 pounds of science, hardware, crew supplies and spacewalk tools will be returned to shore.
According to Kirk Shireman, NASA’s International Space Station Program manager, each commercial resupply flight to the space station is a significant event—everything, from the science to the spare hardware and crew supplies, is vital for sustaining our mission. There is also equipment aboard that will enable novel experiments never attempted before in space and an international docking adapter vital to the future of U.S. commercial crew spacecraft.