Home2002 Treaties and Agreements ...European Space Agency (02-1218.1) – Memorandum of Understanding Concerning the Mars Express Mission hide European Space Agency (02-1218.1) – Memorandum of Understanding Concerning the Mars Express Mission TIAS Office of Treaty Affairs December 18, 2002 Space Cooperation: Mars Express Mission Memorandum of understanding signed at Paris and Washington December 18, 2002; entered into force December 18, 2002. Agreement extending the memorandum of understanding. Effected by exchange of letters at Paris and Washington December 19 and 22, 2008; entered into force December 22, 2008. Download Attachment [1,001 KB] Tags European Space Agency International Law, Treaties, and Agreements Space