The "NISAR satellite" is jointly developed by which of the following organizations?

Question

UnlockIAS · Accepted Answer

Correct — A, ISRO and NASA. NISAR stands for NASA-ISRO Synthetic Aperture Radar — the name itself encodes the two partners. It is a joint Earth-observation mission of the Indian Space Research Organisation (ISRO) and the US National Aeronautics and Space Administration (NASA), carrying a dual-frequency radar (NASA's L-band and ISRO's S-band) to map land and ice-surface changes.

Why the other options are wrong — (b) The European Space Agency (ESA) is not a NISAR partner. NISAR is specifically a NASA-ISRO collaboration.  (c) ISRO is a partner, but the other party is NASA, not ESA — the mission's name (NASA-ISRO SAR) makes the pairing explicit.  (d) Russia's ROSCOSMOS and China's CNSA have no role in NISAR; neither appears in the mission's name or design.

Concept: NISAR (NASA-ISRO Synthetic Aperture Radar) is a joint Earth-observation satellite developed by ISRO and NASA. It is the first satellite to carry a dual-frequency Synthetic Aperture Radar — NASA's L-band and ISRO's S-band — letting it image the Earth's surface in fine detail, day or night and through cloud cover, to track deformation of land, ice sheets and vegetation.

State PCS 2023 Q20 — Science & Technology PYQ with Answer

State PCS 2023 Q20 — Science & Technology PYQ with Answer