NASA commercial space partner Orbital Sciences Corporation of Dulles, Va., successfully launched its Cygnus cargo spacecraft aboard its Antares rocket at 10:58 a.m. EDT Wednesday from the Mid-Atlantic Regional Spaceport Pad-0A at NASAs Wallops Flight Facility in Virginia.

This is the first time a spacecraft launched from Virginia is blazing a trail toward the International Space Station, heralding a new U.S. capability to resupply the orbiting laboratory.

Traveling 17,500 mph in Earth's orbit, Cygnus is on its way to rendezvous with the space station Sunday, Sept. 22. The spacecraft will deliver about 1,300 pounds (589 kilograms) of cargo, including food and clothing, to the Expedition 37 crew, who will grapple and attach the capsule using the station's robotic arm.

"Today marks a milestone in our new era of exploration as we expand the capability for making cargo launches to the International Space Station from American shores," said NASA Administrator Charles Bolden. "Orbital's extraordinary efforts are helping us fulfill the promise of American innovation to maintain our nation's leadership in space."

Orbital is building and testing its Antares rocket and Cygnus spacecraft under NASAs Commercial Orbital Transportation Services (COTS) Program. The successful completion of the COTS demonstration mission will pave the way for Orbital to conduct eight planned cargo resupply flights to the space station through NASAs $1.9 billion Commercial Resupply Services contract with the company.

Future Cygnus flights will significantly increase NASA's ability to deliver new science investigations to the only laboratory in microgravity. As one of two U.S. carriers capable of providing cargo resupply missions to the space station, a successful demonstration mission will ensure a robust national capability to deliver critical science payloads to orbit. NASA's other cargo resupply provider, Space Exploration Technologies (SpaceX), began flying regular cargo missions to the space station in 2012, following its own COTS demonstration mission.

"Todays launch is the culmination of more than five years work between the NASA and Orbital teams," said Alan Lindenmoyer, NASAs program manager for commercial crew and cargo. "Everyone involved should be extremely proud, and we are looking forward to a successful series of checkouts between now and when Cygnus reaches the space station this weekend."

Over the next several days, Cygnus will perform a series of maneuvers to test and prove its systems, ensuring it can safely enter the so-called "keep-out sphere" of the space station, a 656-foot (200-meter) radius surrounding the complex.

NASA Television coverage for grapple and berthing operations will begin at 4:30 a.m. Sept. 22 and continue through the capture and installation of the Cygnus spacecraft. Capture is scheduled for about 7:25 a.m. with installation of the spacecraft beginning around 9 a.m.

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NASA Partner Orbital Sciences Launches Demonstration Mission to Space Station