The Dragon spacecraft will be taken by ship to Long Beach, where some cargo will be removed and returned to NASA. Dragon will then be prepared for a return trip to SpaceX’s test facility in McGregor, Texas, for processing.
“The ability to resupply and return this critical research continues to be an invaluable asset for the researchers here on Earth using the International Space Station as their laboratory in orbit,” said Kirt Costello, deputy chief scientist at NASA’s Johnson Space Center in Houston.
Among the returned investigations were printed parts and hardware from the first technology demonstration of 3-D printing in space. The 3-D printer demonstration used relatively low-temperature plastic feedstock on the space station. The test phase ended with a printed ratchet wrench made with a design file transmitted from Earth to the printer.
“Experiments like 3-D printing in space demonstrate important capabilities that allow NASA and humanity to proceed farther on the journey to Mars,” Costello said.
Dragon also returned samples, hardware and data from several biology and biotechnology studies performed on the station.
The Advancing Membrane Protein Crystallization by Using Microgravity investigation explored the production of high-quality crystals of the cystic fibrosis protein and other closely related proteins.
Because many medically relevant proteins are difficult to crystalize on Earth, researchers attempt to grow them in space to help determine their shape and structure with the hope of improving drug therapies for cystic fibrosis, a genetic disorder that causes severe damage to the lungs and digestive system.
Samples from the Advanced Plant Experiments 03-1 will help scientists better understand the effects of microgravity on the development of roots and cells on plant seedlings.
Dragon is the only space station resupply spacecraft. The spacecraft lifted off atop a SpaceX Falcon 9 rocket from Cape Canaveral Air Force Station in Florida on Jan. 10 carrying more than 5,000 pounds of supplies and elements to support 256 scientific investigations and arrived at the orbiting complex two days later on Jan. 12.
The mission was the fifth of at least 12 cargo resupply trips SpaceX will make to the orbiting outpost through 2016 under NASA’s Commercial Resupply Services contract.
The International Space Station has been occupied continuously since November 2000 and more than 200 people and a variety of international and commercial spacecraft have visited the orbiting laboratory.