Sierra Space’s Orbital Reef, oxygen technology platform achieve NASA milestones

LOUISVILLE — Louisville’s Sierra Space Corp. has achieved in recent weeks several important milestones in projects the aerospace spinoff of Sierra Nevada Corp. is undertaking as part of NASA contracts. 

The company’s Orbital Reef project, a commercially developed, owned, and operated space station to be built in low Earth orbit that SSC is creating with Kent, Washington-based partner Blue Origin, has moved through NASA’s system definition review process. A successful SDR “demonstrates to NASA that the space station design is feasible and achievable while validating that the Orbital Reef system is on-track to proceed into the design phase,” SSC said in…