NASA modifies Dream Chaser ISS cargo contract as Sierra Space shifts to defense work

WASHINGTON — Sierra Space and NASA have sharply revised a contract to use the company’s Dream Chaser vehicle to deliver cargo to the International Space Station as the company pivots to defense applications.

NASA announced Sept. 25 that it modified its Commercial Resupply Services 2, or CRS-2, contract with Sierra Space. That contract originally included seven missions to transport cargo to and from the ISS.

Instead, Sierra Space will fly a single “free flight demonstration” mission, scheduled for late 2026, that will not go to the ISS. The contract no longer specifies a set number of cargo missions to the station, although NASA said it retains the ability to order such missions.

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