by Dragon Models USA, Inc.
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Review & Description
The USA planned to phase out all expendable launch vehicles (ELV) after the Space Shuttle entered service. However, the Challenger accident of 1986 changed all that, and the Delta program was restarted. Termed Delta II, these rockets have made nearly 150 successful launches since 1989, making it the most reliable system in service. As an ELV, each rocket can only be launched once. Among the Delta II s missions are the launching of GPS Block II satellites, Kepler telescope, Deep Impact space probe and several Mars missions for NASA. The latter includes the Mars Phoenix lander in 2007. Read more
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