The correct answer is NISAR.NISAR is a joint Earth-observing mission between NASA and ISRO with the goal to make global measurements of the causes and consequences of land surface changes using advanced radar imaging.This mission concept and the resulting partnership are in response to the National Academy of Science's 2007 survey of Earth observational priorities for the next decade, known as the decadal survey.Important Points NASAIt stands for National Aeronautics and Space Administration.It is founded on 29 July 1958.It is an independent agency of the U.S. federal government responsible for the civil space program, aeronautics research, and space research.ISROIt stands for Indian Space Research Organisation.It is founded on 15 August 1969.It operates under the Department of Space which is directly overseen by the PM of India.