The SpaceX Dragon may have gotten there first, but is after a Wednesday launch from NASA's Wallops Flight Facility in Virginia.
The launch is scheduled for 10:50 a.m. EDT on Wednesday from Pad 0A at the Mid-Atlantic Regional Spaceport at Wallops.
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"Orbital Sciences' will fly into space atop the company's , which is ... about the size of a 13-story building, standing 131.5 feet (40 meters) tall. The two AJ26 engines used in the rocket's first stage are based on the NK-33 engine, which was originally developed to launch Russia's giant N-1 moon rocket — the Soviet answer to America's famous Saturn V — in the 1960s. However, the Soviet heavy-lifter was never launched successfully."
Orbital Sciences is contracted for eight cargo missions to the ISS under a $1.9 billion contract with NASA.
In May 2012, SpaceX, founded by billionaire Elon Musk, and in March of this year,
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