A Delta Rocket Launches . ... Credit Copyright: NASA , KSC Explanation: A Delta rocket is seen being launched in 1988. In use since 1960, Delta rockets have been launched successfully over 200 times. Scientific satellites placed into orbit by a Delta rocket include IUE , COBE , LAGEOS-I , ROSAT , EUVE , GEOTAIL , and WIND . A Delta rocket is scheduled to launch the X-ray Timing Explorer Satellite (XTE) in the very near future. Commercial launches include INMARSAT . ...