Phase 1(1981-1986): Halley Comet Exploration

Spacecraft: Giotto, Vega 1-Vega 2, Suisei, Sakigake

Ground: International Halley Watch
 
 
 
 

Phase 2 (1987-2001/3): Solar Terrestrial Science

Spacecraft about 25 from the four Agencies (SOHO, Interboll Aurora and Interboll Tail, Polar, Wind,

Geotail, Cluster, Ulysses, Yohkoh, Coronas etc.

Ground based observations
 
 

Phase 3 (1996- ): Solar System Exploration with focus on Small Bodies.

Spacecraft (Rosetta, Muses-C, NEAR, Stardust, DS-1, Contour, SMART 1, Phobos, Pluto Kuiper Express etc)

Ground based observations