SpaceX Dragon spacecraft returns to Earth
Washington: A Space Exploration Technologies Corp. (SpaceX) Dragon spacecraft successfully completed the company`s second cargo flight to the International Space Station on Tuesday, with a 12:36 pm EDT splashdown in the Pacific Ocean a few hundred miles west of Baja California, Mexico.
"The scientific research delivered and being returned by Dragon enables advances in every aspect of NASA`s diverse space station science portfolio, including human research, biology and physical sciences," Julie Robinson, International Space Station Program scientist, said.
"There are more than 200 active investigations underway aboard our orbiting laboratory in space. The scientific community has eagerly awaited the return of today`s Dragon to see what new insights the returned samples and investigations it carries will unveil," she said.
Science being conducted aboard the space station includes research on physical and biological processes that cannot be done anywhere else, applied research to improve lives on Earth, and exploration research to help humans move safely beyond Earth orbit.
A boat will take the Dragon capsule to a port near Los Angeles, where it will be prepared for a return journey to SpaceX`s test facility in McGregor, Texas, for processing.
Some cargo will be removed at the port in California and returned to NASA within 48 hours.
This includes a freezer packed with research samples collected in the space station`s unique microgravity environment. The remainder of the cargo will be returned to Texas with the capsule.
Dragon is the only space station resupply spacecraft able to return a significant amount of cargo to Earth.
The spacecraft lifted off from Cape Canaveral Air Force Station in Florida on March 1, carrying about 1,268 pounds (575 kilograms) of supplies and investigations.
It returned about 2,668 pounds (1,210 kilograms) of science samples, equipment and education activities.
Investigations included among the returned cargo could aid in food production during future long-duration space missions and enhance crop production on Earth.
Others could help in the development of more efficient solar cells, detergents and semiconductor-based electronics.
Among the returned investigations was the Coarsening in Solid-Liquid Mixtures (CSLM-3) experiment, which also launched to space aboard this Dragon.
CLSM-3 studies how crystals known as dendrites form as a metal alloy becomes solid.
The research could help engineers develop stronger materials for use in automobile, aircraft and spacecraft parts.
Dragon also is returning several human research samples that will help scientists continue to examine how the human body reacts to long-term spaceflight. The results will have implications for future space exploration and direct benefits here on Earth.
The mission was the second of at least 12 cargo resupply trips SpaceX plans to make to the space station through 2016 under NASA `s Commercial Resupply Services contract.
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