Home2007 Treaties and Agreements ...European Space Agency (07-618.1) – Memorandum of Understanding Concerning the James Webb Space Telescope hide European Space Agency (07-618.1) – Memorandum of Understanding Concerning the James Webb Space Telescope TIAS Office of Treaty Affairs June 18, 2007 Space Cooperation: Space Telescope Memorandum of understanding signed at Paris June 18, 2007; entered into force June 18, 2007. Download attachment [969 KB] Tags European Space Agency Space Treaties