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			 Liftoff of the company’s Falcon 9 rocket and Dragon freighter was 
			rescheduled for 1:53 a.m. EDT/0553 GMT on Sunday. Meteorologists 
			expected a 60 percent chance of acceptable weather. 
			 
			The mission is the fourth under the company’s 12-flight, $1.6 
			billion contract with NASA to fly cargo to the station, a $100 
			billion research complex that flies about 260 miles (420 km) above 
			Earth. 
			 
			A launch on Sunday would come just two weeks after another Falcon 9 
			rocket blasted off to deliver a commercial communications satellite 
			into orbit for Hong Kong-based Asia Satellite Telecommunications 
			Holdings Ltd. 
			  
			
			  
			 
			"We are ramping up for that launch rate, and actually even more than 
			that," Hans Koenigsmann, SpaceX vice president of mission assurance, 
			told a news conference on Friday. 
			 
			"In the future, I anticipate that this will be the norm." 
			 
			SpaceX has a backlog of nearly 50 launches, worth nearly $5 billion, 
			on its manifest for NASA and commercial satellite operators, said 
			company spokesman John Taylor. 
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			On Tuesday, SpaceX also won a second NASA contract, worth up to $2.6 
			billion, to upgrade and fly its Dragon capsules for astronauts – and 
			potentially paying passengers as well. A crewed Dragon spaceship is 
			targeted for a debut test flight in 2016. 
			 
			(Reporting by Irene Klotz; Editing by Paul Tait) 
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