Atlas 5-552 – Spaceflight Now

May 18, 2026

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Sierra Nevada confirms ULA will launch first two Dream Chaser cargo missions

July 22, 2017 Stephen Clark

Sierra Nevada and United Launch Alliance have announced the most powerful version of the Atlas 5 rocket, with five strap-on boosters and a twin-engine upper stage, will send the first two Dream Chaser cargo missions to the International Space Station from Cape Canaveral in 2020 and 2021, a schedule that still must be confirmed by NASA.