Orbital Reef
In Development
Sierra Space
Overview
Commercial mixed-use station in LEO co-led with Blue Origin, with Boeing, Redwire, and others as partners. Sierra provides LIFE habitats, node modules, and Dream Chaser transport; Blue Origin provides core infrastructure, power/thermal mast, and New Glenn launch. It is the slowest of the four major US commercial-station architectures and is Blue Origin/Sierra's bid for NASA's Commercial LEO Destinations Phase 2 award.
System Definition Review with NASA complete. CLDC Phase 2 final RFP expected end of September 2026, proposals due 60 days later, award targeted spring 2027. Late-2026 LIFE pathfinder not re-confirmed.