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SpaceRef - Exploration and Missions - Robotic Missions - Planetary Science - Giotto
Giotto - Giotto's primary mission to encounter and examine Comet Halley and Comet Grigg-Skjellerup. This space probe is now deactivated but it flew past Earth in July 1999. [European Space Agency]
Giotto - ESA mission to Comets Halley and Grigg-Skjellerup - The Giotto mission was designed to study Comet P/Halley, and also studied Comet P/Grigg-Skjellerup during its extended mission. NASA GSFC's National Space Science Data Center (NSSDC)
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