The Delta IV Heavy (Delta 9250H) was an expendable heavy-lift launch vehicle, the largest member of the Delta IV family. Following the retirement of the Space Shuttle in 2011, it was the most capable operational launch vehicle until the Falcon Heavy's debut in 2018.
The Delta IV Heavy (Delta 9250H) was an expendable heavy-lift launch vehicle, the largest member of the Delta IV family. Following the retirement of the Space Shuttle in 2011, it was the most capable operational launch vehicle until the Falcon Heavy's debut in 2018.
Source: Wikipedia "Delta IV Heavy" · CC BY-SA 4.0
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