Select a past or current ESA satellite program. Discuss the details, including the mission, the orbit, the successes, the failures , and the results. do not repeat a program that has already been discussed .

Select a past or current ESA satellite program. Discuss the details, including the mission, the orbit, the successes, the failures , and the results. do not repeat a program that has already been discussed .

So far Galileo and Solar Orbiter have been selected. This is a discussion post so formality and strict adherence to APA does not matter.