Delta 2-H launches NASA's MESSENGER to Mercury
8/3/03 ~ 2:15:56am

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A Boeing Delta 2-Heavy rocket, with slightly larger Solid Rocket Boosters than a typical Delta 2, launches NASA's MESSENGER spacecraft on a long journey to the planet Mercury, which has been visited by just one man made object previously. Mariner 10 flew by the planet three times in 1973-74. MESSENGER, the MErcury Surface, Space ENvironment, GEochemistry, and Ranging mission, successfully entered orbit around Mercury on March 17, 2011.

Astronomy Picture of the Day

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