{"id":16458,"date":"2025-04-19T10:41:59","date_gmt":"2025-04-19T05:11:59","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=16458"},"modified":"2025-05-28T12:33:20","modified_gmt":"2025-05-28T07:03:20","slug":"nisar","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/nisar\/","title":{"rendered":"NISAR Mission"},"content":{"rendered":"<h2>NISAR Mission Latest News<\/h2>\n<p>The NISAR Mission is expected to be launched in June 2025 onboard a GSLV (Geosynchronous Satellite Launch Vehicle).<\/p>\n<h2>About the NISAR Mission<\/h2>\n<ul>\n<li><strong>NISAR (NASA-ISRO Synthetic Aperture Radar)<\/strong>\u00a0is a\u00a0<strong>joint Earth observation satellite mission<\/strong>\u00a0developed by\u00a0<strong>NASA<\/strong>\u00a0and\u00a0<strong>ISRO<\/strong>\u00a0under a\u00a0<strong>bilateral agreement signed in 2014<\/strong>.<\/li>\n<li>The satellite is scheduled for\u00a0<strong>launch in June 2025<\/strong>\u00a0from the\u00a0<strong>Satish Dhawan Space Centre<\/strong>, Andhra Pradesh, aboard\u00a0<strong>ISRO\u2019s Geosynchronous Satellite Launch Vehicle Mark II (GSLV Mk II)<\/strong>.<\/li>\n<li>It marks the\u00a0<strong>first-ever collaboration of its kind<\/strong>\u00a0between India and the United States in\u00a0<strong>radar-based Earth monitoring from space<\/strong>.<\/li>\n<li><strong>NISAR aims to map the entire Earth\u2019s surface every 12 days<\/strong>, enabling high-frequency, precise, and repeat observations.<\/li>\n<li>It will monitor\u00a0<strong>ecosystem changes, ice sheet dynamics, vegetation patterns, sea level rise<\/strong>, and\u00a0<strong>groundwater variation<\/strong>, and will track\u00a0<strong>natural hazards<\/strong>\u00a0like\u00a0<strong>earthquakes, volcanoes, tsunamis, and landslides<\/strong>.<\/li>\n<\/ul>\n<h3>Key Features and Components<\/h3>\n<figure class=\"table\">\n<table>\n<tbody>\n<tr>\n<td>\n<p><strong>Feature<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Details<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Thermal blanketing<\/strong><\/p>\n<\/td>\n<td>\n<p>Uses\u00a0<strong>gold-coloured thermal blankets<\/strong>\u00a0to maintain the satellite\u2019s optimal temperature.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Radar payload<\/strong><\/p>\n<\/td>\n<td>\n<p>Core instrument for capturing\u00a0<strong>Earth surface movement<\/strong>\u00a0and\u00a0<strong>geophysical changes<\/strong>.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Spacecraft bus<\/strong><\/p>\n<\/td>\n<td>\n<p>Supports\u00a0<strong>power generation, communication, navigation<\/strong>, and\u00a0<strong>attitude control<\/strong>.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong>Antenna and Reflector<\/strong><\/p>\n<\/td>\n<td>\n<p>Equipped with a\u00a0<strong>12-metre drum-shaped wire mesh reflector<\/strong>, the\u00a0<strong>largest in space<\/strong>, to enhance signal focus and surface imaging precision.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h3>Technological Advancements<\/h3>\n<ul>\n<li><strong>Dual Radar System<\/strong>: NISAR is the\u00a0<strong>first satellite to use two radar frequencies simultaneously<\/strong>\u00a0\u2014\u00a0<strong>L-band (NASA)<\/strong>\u00a0and\u00a0<strong>S-band (ISRO)<\/strong>.\n<ul>\n<li><strong>L-band Radar<\/strong>: Penetrates\u00a0<strong>dense forests and soil<\/strong>, useful for\u00a0<strong>volcanic and seismic zone monitoring<\/strong>.<\/li>\n<li><strong>S-band Radar<\/strong>: Offers\u00a0<strong>higher resolution surface imaging<\/strong>, operating at\u00a0<strong>2\u20134 GHz frequency<\/strong>\u00a0and\u00a0<strong>8\u201315 cm wavelength<\/strong>, ideal for\u00a0<strong>urban and terrain analysis<\/strong>.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Related Upcoming ISRO Missions<\/h2>\n<ul>\n<li><strong>EOS-09 Mission<\/strong>: An\u00a0<strong>Earth Observation Satellite<\/strong>\u00a0capable of capturing\u00a0<strong>high-resolution images during day and night<\/strong>, planned for\u00a0<strong>May 2025<\/strong>.<\/li>\n<li><strong>Gaganyaan TV-D2 Mission<\/strong>: A\u00a0<strong>Crew Escape System test<\/strong>\u00a0for India\u2019s\u00a0<strong>first human spaceflight programme<\/strong>, simulating emergency scenarios.<\/li>\n<li><strong>Axiom-4 Mission<\/strong>:\u00a0<strong>Indian astronaut Shubhanshu Shukla<\/strong>\u00a0to travel to the\u00a0<strong>International Space Station<\/strong>, becoming\u00a0<strong>only the second Indian<\/strong>\u00a0in space after\u00a0<strong>Rakesh Sharma<\/strong>\u00a0(1984).<\/li>\n<\/ul>\n<h2>NISAR Mission FAQs<\/h2>\n<p><strong>Q1.<\/strong>\u00a0What is the NISAR Mission?<br \/>\n<strong>Ans.<\/strong>\u00a0NISAR (NASA-ISRO Synthetic Aperture Radar) is a joint Earth observation satellite project between NASA and ISRO designed to monitor changes in Earth\u2019s surface, including ecosystems, glaciers, groundwater, and natural hazards.<\/p>\n<p><strong>Q2.<\/strong>\u00a0What is the primary objective of the NISAR mission?<br \/>\n<strong>Ans.<\/strong>\u00a0The mission aims to provide high-resolution, all-weather, day-and-night imaging to study earthquakes, volcanoes, landslides, floods, and soil moisture dynamics.<\/p>\n<p><strong>Q3.<\/strong>\u00a0What kind of radars does NISAR use?<br \/>\n<strong>Ans.<\/strong>\u00a0NISAR uses dual-band Synthetic Aperture Radars \u2014 L-band radar (provided by NASA) and S-band radar (developed by ISRO).<\/p>\n<p><strong>Source:\u00a0<\/strong><a href=\"https:\/\/indianexpress.com\/article\/india\/long-delayed-isro-nasa-mission-nisar-may-finally-be-launched-in-june-9952421\/\" target=\"_blank\" rel=\"nofollow noopener\">IE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>NISAR (NASA-ISRO Synthetic Aperture Radar) is a joint Earth observation satellite mission developed by NASA and ISRO under a bilateral agreement signed in 2014.<\/p>\n","protected":false},"author":5,"featured_media":48416,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[189],"class_list":{"0":"post-16458","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-nisar-mission","9":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/16458","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=16458"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/16458\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/48416"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=16458"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=16458"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=16458"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}