Three companies will share a combined $1.1 billion to complete designs of commercial spacecraft that could launch astronauts to the International Space Station by 2017.Boeing and SpaceX were given awards worth $460 million and $440 million, respectively, for a period running through May 2014. Sierra Nevada received $212.5 million.All three companies are developing systems that would launch from here.Boeing's CST-100 capsule and Sierra Nevada's winged Dream Chaser would launch atop United Launch Alliance's Atlas V rocket.SpaceX's Dragon, an unmanned version of which has already flown to the station, would launch on the company's Falcon 9 rocket.The announcement means at least one other company that made a strong push for an award, ATK, lost its bid.Once the base period is complete, NASA could extend the contracts to culminate in a orbital demonstration flight with a human crew.For more information about reprints & permissions, visit our FAQ's. To report corrections and clarifications, contact Standards Editor Brent Jones. For publication consideration in the newspaper, send comments to letters@usatoday.com. Include name, phone number, city and state for verification. To view our corrections, go to corrections.usatoday.com.
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