Editing Callisto (moon) (section)

===Old proposals===
Formerly proposed for a launch in 2020, the [[Europa Jupiter System Mission]] (EJSM) was a joint [[NASA]]/[[ESA]] proposal for exploration of [[Jupiter]]'s moons. In February 2009 it was announced that ESA/NASA had given this mission priority ahead of the [[Titan Saturn System Mission]].<ref>{{cite news|url=http://news.bbc.co.uk/1/hi/sci/tech/7897585.stm|title=Jupiter in space agencies' sights|first=Paul|last=Rincon|work=BBC News|access-date=20 February 2009|date=20 February 2009|archive-date=21 February 2009|archive-url=https://web.archive.org/web/20090221185643/http://news.bbc.co.uk/1/hi/sci/tech/7897585.stm|url-status=live}}</ref> At the time ESA's contribution still faced funding competition from other ESA projects.<ref>{{cite web|url=http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=41177|title=Cosmic Vision 2015–2025 Proposals|date=21 July 2007|publisher=ESA|access-date=20 February 2009|archive-date=2 September 2011|archive-url=https://web.archive.org/web/20110902033453/http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=41177|url-status=live}}</ref> EJSM consisted of the NASA-led [[Jupiter Europa Orbiter]], the ESA-led [[Jupiter Ganymede Orbiter]] and possibly a [[JAXA]]-led [[Jupiter Magnetospheric Orbiter]].