Chennai, July 31 -- NASA Programme Executive Sangamithra Datta described as a "histroic milestone" the launch of the NISAR, a sophisticated earth observation satellite collaboration between Indian Space Agency (ISRO) developed in collaboration with the American counterpart NASA and which was launched from Sriharikota on Wednesday evening .

Datta highlighted the historic collaboration between NASA and ISRO on a major earth-observing mission, emphasising the joint efforts of scientists and engineers from both agencies in designing and building the project.

"This is definitely historic because it's the first big Earth observing mission that two big space agencies are working on, both elite- NASA and the Indian Space Research Organisation.....