SpaceX's contract with NASA This will be the final flight for SpaceX under its first commercialresupplyservices contract with NASA.
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In December, SpaceX won a $1.6 billion CommercialResupplyServices contract to resupply the International Space Station.
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Weather, engineering, and luck permitting, the Cygnus CommercialResupplyServices 4 mission will launch at 5:55pm ET from Cape Canaveral, Florida.
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The launch vehicle will boost a Dragon cargo module to the International Space Station on the company's 17th CommercialResupplyServices (CRS-17) mission for NASA.