A SpaceX Dragon resupply spacecraft carrying more than 5,800 pounds of science experiments, crew supplies, and other cargo is on its way to the International Space Station after launching at 8:44 p.m. EDT Thursday from NASA Kennedy Space Center in Florida.
The spacecraft launched on a Falcon 9 rocket from Launch Pad 39A at Kennedy for the company’s 25th commercial resupply services mission for NASA. It is scheduled to autonomously dock at the space station about 11:20 a.m. Saturday, July 16, and remain there for about a month. Coverage of arrival will begin at 10 a.m. on NASA Television, the agency’s website, and the NASA app.
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Among the science experiments Dragon is delivering to the space station are:
Mapping Earth’s Dust
The Earth Surface Mineral Dust Source Investigation (EMIT), developed by NASA’s Jet Propulsion Laboratory in Southern California, employs NASA imaging spectroscopy technology to measure the mineral composition of dust in Earth’s arid regions. Mineral dust blown into the air can travel significant distances and affect Earth’s climate, weather, vegetation, and more. For example, dust containing dark minerals that absorb sunlight can warm an area, while light-colored mineral dust can cool it. Blowing dust also affects air quality, surface conditions such as rate of snow melt, and phytoplankton health in the ocean. The investigation collects images for one year to generate maps of the mineral composition in the regions on Earth that produce dust. Such mapping could advance our understanding of the effects of mineral dust on human populations now and in the future.
Speedier Immune System Aging
Aging is associated with changes in the immune response known as immunosenescence. Microgravity causes changes in human immune cells that resemble this condition, but happen faster than the actual process of aging on Earth. The Immunosenescence investigation, sponsored the by International Space Station U.S. National Laboratory, uses tissue chips to study how microgravity affects immune function during flight and whether immune cells recover post-flight. Tissue chips are small devices that contain human cells in a 3D structure, allowing scientists to test how those cells respond to stresses, drugs, and genetic changes.