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[b]Dragon departs station, returns to Earth Friday[/b] With NASA astronaut Shane Kimbrough monitoring aboard the International Space Station, SpaceX's Dragon CRS-22 cargo spacecraft undocked from the space-facing port on the Harmony module on Thursday (July 8) at 10:45 a.m. EDT (1445 GMT). On Friday, the Dragon will conduct a deorbit burn to begin its re-entry sequence into Earth's atmosphere. The capsule is expected to splash down at approximately 11:29 p.m. EDT (0329 GMT July 10) in the Gulf of Mexico near Tallahassee, Florida. Some of the scientific investigations the Dragon is returning to Earth include: [list][*]Lyophilization-2, which examined how gravity affects freeze-dried materials and could result in improved freeze-drying processes for pharmaceutical and other industries. [*]Molecular Muscle Experiment-2, which tested a series of drugs to see whether they can improve health in space, possibly leading to new therapeutic targets for examination on Earth. [*]Oral Biofilms in Space, sponsored by Colgate-Polmolive, which studied how gravity affects the structure, composition, and activity of oral bacteria in the presence of common oral care agents. The findings could support development of novel treatments to fight oral diseases such as cavities, gingivitis and periodontitis.[/list]
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