Home1998 Treaties and Agreements ...Germany (98-1210) – Memorandum of Understanding for International Cooperation on the GRACE Mission hide Germany (98-1210) – Memorandum of Understanding for International Cooperation on the GRACE Mission TIAS Office of Treaty Affairs December 10, 1998 Space Cooperation: Gravity Recovery and Climate Experiment (GRACE) Mission Memorandum of understanding signed November 13 and December 10, 1998; entered into force December 10, 1998. Agreement amending and extending the memorandum of understanding. Signed February 26 and 27 and March 16, 2009; entered into force March 16, 2009. Agreement extending the memorandum of understanding, as amended and extended. Signed December 16, 17, and 18, 2009; entered into force December 18, 2009. Agreement signed June 10, 2010; entered into force June 10, 2010. Download attachment [647 KB] Tags Germany Space Treaties