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| | Boeing: Integrated Defense Systems - Delta Launch Vehicles |
 | | Delta was derived from the Thor intermediate-range ballistic missile, developed in the mid-1950s for the U.S. Air Force. |
 | | The first commercial Delta IV order was announced in Dec. 1999, and the first Delta IV launched with a commercial payload, Eutelsat's W5, took place on Nov. 20, 2002. |
 | | In a series of incremental steps, Delta payload capacity grew from 45 kg (100 lb) to a 185 km circular low-Earth orbit (LEO) up to 21,892 kg (48,264 lb) to 407 km circular LEO and 12,757 kg (28, 124 lb) to geosynchronous transfer orbit (GTO) using Delta IV. |
| www.boeing.com /defense-space/space/delta (447 words) |
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