Why privatized space

Privatized space exploration

Space Exploration / March 25, 2016

In this image provided by NASA With darkness, Earth's horizon and thin line of atmosphere forming a backdrop, the SpaceX Dragon commercial cargo craft is grappled by the Canadarm2 robotic arm at the International Space Station.

This image provided by NASA shows the SpaceX Dragon commercial cargo craft as it approaches the International Space Station Thursday May 24, 2012 for a series of tests to clear it for its final rendezvous and grapple on May 25. Expedition 31 Flight Engineers Don Pettit and Andre Kuipers will use the Canadarm2 robotic arm to grapple the supply ship about 8:06 a.m., Friday with the berthing to the Earth-facing side of the station's Harmony node following about 11:20 a.m. Dragon is scheduled to spend about a week docked with the station before returning to Earth on May 31 for retrieval. (AP Photo/NASA

This image provided by NASA-TV shows the SpaceX Dragon commercial cargo craft, top, as Dragon approaches the International Space Station, Friday, May 25, 2012. Dragon is scheduled to spend about a week docked with the station before returning to Earth on May 31 for retrieval. (AP Photo/NASA)

This image provided by NASA-TV shows the SpaceX Dragon commercial cargo craft taken from Canadarm2's video camera as Dragon approaches the International Space Station, Friday, May 25, 2012. In foreground is a portion of Canadarm2. Expedition 31 Flight Engineers Don Pettit and Andre Kuipers will use the Canadarm2 robotic arm to grapple the supply ship Friday morning with the berthing to the Earth-facing side of the station's Harmony node following. Dragon is scheduled to spend about a week docked with the station before returning to Earth on May 31 for retrieval. (AP Photo/NASA)

NASA Mission Control.

SpaceX Mission Control

This image provided by NASA-TV shows the SpaceX Dragon commercial cargo craft as it flys over the coast of West Africa taken from Canadarm2's video camera as Dragon approaches the International Space Station early Friday May 25, 2012. In foreground is a portion of Canadarm2. Expedition 31 Flight Engineers Don Pettit and Andre Kuipers will use the Canadarm2 robotic arm to grapple the supply ship early Friday morning with the berthing to the Earth-facing side of the station's Harmony node following about 11:20 a.m. Dragon is scheduled to spend about a week docked with the station before returning to Earth on May 31 for retrieval. (AP Photo/NASA)

This image provided by NASA-TV shows the International Space Station taken from the thermal imaging camera aboard the SpaceX Dragon commercial cargo craft as it approaches the International Space Station Thursday May 24, 2012. (AP Photo/NASA)

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