{"id":37666,"date":"2025-11-09T09:51:12","date_gmt":"2025-11-09T04:21:12","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=37666"},"modified":"2025-11-10T12:22:56","modified_gmt":"2025-11-10T06:52:56","slug":"aditya-l1-spacecraft-takes-route-correction","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/aditya-l1-spacecraft-takes-route-correction\/","title":{"rendered":"Aditya L1 Spacecraft Takes Route Correction"},"content":{"rendered":"<h2>What\u2019s in today\u2019s article?<\/h2>\n<ul>\n<li>Why in News?<\/li>\n<li>About Aditya L1 Mission<\/li>\n<li>What are the Objectives of the Aditya L1?<\/li>\n<li>What are the Lagrange Points?<\/li>\n<li>What is a Halo Orbit?<\/li>\n<li>Why will Aditya Spacecraft go around L1 Point?<\/li>\n<li>Significance\/Need of Studying Sun from Space<\/li>\n<li>News Summary<\/li>\n<\/ul>\n<h2>Why in News?<\/h2>\n<ul>\n<li>The Indian Space Research Organisation (ISRO) updated that a Trajectory Correction Maneuver (TCM) was performed on India\u2019s first solar mission <a href=\"https:\/\/vajiramandravi.com\/upsc-exam\/aditya-l1\/\" target=\"_blank\" rel=\"noopener noreferrer\" target=\"_blank\">Aditya L1<\/a>.<\/li>\n<\/ul>\n<h2>About Aditya L1 Mission<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/vajiram-prod.s3.ap-south-1.amazonaws.com\/Aditya_L1_Mission_Info_1e026c73f9.jpg\" alt=\"Aditya L1 Mission Info\" \/><\/p>\n<ul>\n<li>&#8216;Aditya&#8217; literally means the Sun in Sanskrit.<\/li>\n<li>ISRO\u2019s Aditya L1 mission is <strong>India&#8217;s first space-based mission to study the Sun<\/strong>. It was launched from the Satish Dhawan Space Centre on <strong>2nd September, 2023<\/strong>.<\/li>\n<li>Aditya-L1 will first be placed in a low earth orbit by ISRO&#8217;s <strong>PSLV-C57 launch vehicle<\/strong>.<\/li>\n<li>After that, the spacecraft&#8217;s orbit will be made more elliptical.<\/li>\n<li>On-board propulsion will be used to launch the spacecraft towards <strong>L1 point<\/strong>.<\/li>\n<li>As it moves towards L1, the spacecraft will exit Earth&#8217;s gravitational Sphere of Influence (SOI).<\/li>\n<li>After it exits the SOI, the spacecraft will begin its cruise phase.<\/li>\n<li>The mission will take around 109 Earth days after launch to reach the <strong>halo orbit<\/strong> around the <strong>L1 point<\/strong>, which is <strong>about 1,500,000 km from Earth<\/strong>.<\/li>\n<\/ul>\n<h2>What are the Objectives of the Aditya L1?<\/h2>\n<ul>\n<li>The mission&#8217;s main objective is to <strong>expand our knowledge of the Sun, and how its radiation, heat, flow of particles, and magnetic fields affect us<\/strong>.<\/li>\n<li>Below is the list of other objectives that the mission will embark upon:\n<ul>\n<li>To study the upper atmospheric layers of the Sun called chromosphere and corona. While the corona is the outermost layer, the chromosphere is just below it.<\/li>\n<li>To examine coronal mass ejections (CMEs), which are large expulsions of plasma and magnetic fields from the Sun&#8217;s corona.<\/li>\n<li>To analyse the corona&#8217;s magnetic field and the driver of the space weather.<\/li>\n<li>To understand why the Sun&#8217;s not-so-bright corona is a million degree Celsius hot when the temperature on the surface of the Sun is just about 5,500 degrees Celsius.<\/li>\n<li>To help scientists know the reasons behind the acceleration of particles on the Sun, which leads to the solar wind &#8211; the constant flow of particles from the Sun.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>What are the Lagrange Points?<\/h2>\n<p><img decoding=\"async\" src=\"https:\/\/vajiram-prod.s3.ap-south-1.amazonaws.com\/Langrange_Points_abecbd3d4b.jpg\" alt=\"Lagrange Points\" \/><\/p>\n<ul>\n<li>There are five Lagrange points, L1 to L5, between any two-celestial body system.<\/li>\n<li>At these positions, the gravitational pull of the celestial bodies equals the centripetal force required to keep a smaller third body in orbit.<\/li>\n<li>In simpler words, the forces acting on the third body cancel each other out.<\/li>\n<li>The points can be used as \u2018parking spots\u2019 for spacecraft in space to remain in a fixed position with minimal fuel consumption, according to NASA.<\/li>\n<li>They have been named after Italian-French mathematician <strong>Joseph-Louis Lagrange<\/strong> (1736-1813), who was the first one to find the positions.<\/li>\n<li>So, between the Earth and the Sun, a satellite can occupy any of five Lagrangian points.<\/li>\n<\/ul>\n<h3>What is a Halo Orbit?<\/h3>\n<ul>\n<li>NASA says a spacecraft can \u201corbit\u201d about an unstable Lagrange point with a minimum use of thrusters for stationkeeping.<\/li>\n<li>Such an orbit is known as a halo orbit as \u201cit appears as an ellipse floating over the planet\u201d.<\/li>\n<li>A halo orbit, however, isn\u2019t the usual orbit because the unstable Lagrange point doesn\u2019t exert any attractive force on its own.<\/li>\n<\/ul>\n<h2>Why will Aditya Spacecraft go around L1 Point?<\/h2>\n<ul>\n<li>It\u2019s because <strong>L1 gets a continuous and unhindered view of the Sun<\/strong>.<\/li>\n<li>L2 is located behind the Earth, and thus obstructs the view of the Sun, while L3 is behind the Sun which is not a great position to communicate with Earth.<\/li>\n<li>L4 and L5 are good and stable locations but are much farther from Earth compared to L1, which is <strong>directly between the Sun and the Earth<\/strong>.\n<ul>\n<li>The European Space Agency\u2019s (ESA) <strong>Solar and Heliospheric Observatory spacecraft<\/strong> (SOHO) is also stationed at a halo orbit around the L1 point of the Earth-Sun system.<\/li>\n<li>The spacecraft has been operational since 1996 and has discovered more than 400 comets, studied the outer layers of the Sun and examined solar winds.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>Significance\/Need of Studying Sun from Space<\/h2>\n<ul>\n<li>According to ISRO, the Sun emits radiation\/light in nearly all wavelengths along with various energetic particles and magnetic fields.<\/li>\n<li>The atmosphere of the Earth as well as its magnetic field acts as a protective shield and blocks a number of harmful wavelength radiations including particles and fields.<\/li>\n<li>This means studying the Sun from Earth can\u2019t provide a complete picture and it becomes crucial to observations from outside the planet\u2019s atmosphere i.e., from space.<\/li>\n<\/ul>\n<h2>News Summary<\/h2>\n<ul>\n<li>The Indian Space Research Organisation (ISRO) updated that a Trajectory Correction Maneuver (TCM) was performed on India\u2019s first solar mission Aditya L1.<\/li>\n<li>The spacecraft propulsion system was fired for 16 seconds on October 6 to correct its trajectory towards the L1 point.<\/li>\n<li>The space agency said that the manoeuvre \u201cwas needed\u201d to correct the trajectory of the spacecraft was evaluated after it was inserted in the path towards the L1 point on September 19.<\/li>\n<li>The spacecraft left the Earth\u2019s sphere of influence eight days ago \u2014 the second spacecraft by the Indian space agency after Mangalyaan that has left the Earth\u2019s sphere of influence.<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1) What do you mean by Solar Flare?<\/h3>\n<p>Solar Flare is a brief eruption of intense high-energy radiation from the sun&#8217;s surface, associated with sunspots and causing radio and magnetic disturbances on the earth.<\/p>\n<h3>Q2) What is Coronal Mass Ejection?<\/h3>\n<p>An event in which a large cloud of energetic and highly magnetized plasma erupts from the solar corona into space, causing radio and magnetic disturbances on the earth.<\/p>\n<hr \/>\n<p><strong>Source: <\/strong><a href=\"https:\/\/indianexpress.com\/article\/technology\/science\/aditya-l1-mission-isro-corrects-trajectory-to-l1-point-8973692\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">Aditya L1 takes route correction; spacecraft healthy, says ISRO<\/a> | <a href=\"https:\/\/timesofindia.indiatimes.com\/education\/learning-with-toi\/explained-what-is-aditya-l1-what-is-its-purpose-and-function\/articleshow\/103378765.cms\" target=\"_blank\" rel=\"noopener noreferrer nofollow\">ToI<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ISRO\u2019s Aditya L1 mission is India&#8217;s first space-based mission to study the Sun.<\/p>\n","protected":false},"author":5,"featured_media":37667,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[],"class_list":{"0":"post-37666","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-mains-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/37666","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=37666"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/37666\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/37667"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=37666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=37666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=37666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}