Home2012 Treaties and Agreements ...European Space Agency (12-306) – Memorandum of Understanding Concerning the Solar Orbiter Mission hide European Space Agency (12-306) – Memorandum of Understanding Concerning the Solar Orbiter Mission TIAS Office of Treaty Affairs March 6, 2012 Space Cooperation: Solar Orbiter Mission Memorandum of understanding signed at Paris and Washington February 23 and March 6, 2012; entered into force March 6, 2012. Download attachment [1 MB] Tags European Space Agency Space Treaties