{"id":133568,"date":"2024-09-21T19:21:37","date_gmt":"2024-09-21T13:51:37","guid":{"rendered":"https:\/\/pwonlyias.com\/stage\/?post_type=current-affairs&#038;p=133568"},"modified":"2024-09-23T18:22:33","modified_gmt":"2024-09-23T12:52:33","slug":"starlink-satellites-impact-on-astronomy","status":"publish","type":"current-affairs","link":"https:\/\/pwonlyias.com\/stage\/current-affairs\/starlink-satellites-impact-on-astronomy","title":{"rendered":"Starlink satellites: Impact on Astronomy"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Starlink\u2019s satellite network is disrupting radio astronomers by creating unwanted electromagnetic radiation (UEMR), known as<\/span><b> &#8220;radio noise.&#8221;<\/b><\/p>\n<h2><span style=\"font-size: 18pt;\"><b>More on the news<\/b><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Starlink currently has over 6,300 satellites orbiting Earth at around 550 km altitude.<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">These satellites provide high-speed internet to remote areas with limited access.<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><span style=\"font-weight: 400;\">The work of radio astronomers is disrupted by interference from satellites.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-133775 alignright\" src=\"https:\/\/pwonlyias.com\/stage\/wp-content\/uploads\/2024\/09\/unnamed-2024-09-23t163918778-66f163caf263f.webp\" alt=\"Starlink satellites\" width=\"330\" height=\"186\" srcset=\"https:\/\/pwonlyias.com\/stage\/wp-content\/uploads\/2024\/09\/unnamed-2024-09-23t163918778-66f163caf263f.webp 640w, https:\/\/pwonlyias.com\/stage\/wp-content\/uploads\/2024\/09\/unnamed-2024-09-23t163918778-66f163caf263f-300x169.webp 300w\" sizes=\"(max-width: 330px) 100vw, 330px\" \/><\/p>\n<h2><span style=\"font-size: 18pt;\"><b>About Starlink satellites<\/b><\/span><\/h2>\n<ul>\n<li><span style=\"font-weight: 400;\">It is a large constellation of low Earth orbit (LEO) satellites.<\/span><\/li>\n<li><b>Developed by:<\/b><span style=\"font-weight: 400;\"> SpaceX, led by Elon Musk.<\/span><\/li>\n<li><b>Purpose: <\/b><span style=\"font-weight: 400;\">Provide global high-speed internet, especially in remote and underserved areas.<\/span><\/li>\n<li><b>Applications: <\/b><span style=\"font-weight: 400;\">Rural internet, disaster zones, military applications, and potential support for 5G networks.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><span class=\"vc_button\"><a href=\"https:\/\/www.pw.live\/batches\/upsc?utm_source=seo+upsc+batch&#038;utm_medium=seo+upsc&#038;utm_campaign=seo&#038;utm_id=upsc\" target=\"_blank\" rel=\"nofollow noopener\">Enroll now for UPSC Online Course<\/a><\/span><\/p>\n<div class=\"vc_table_green\"><\/p>\n<table style=\"width: 99.9901%;\">\n<tbody>\n<tr>\n<th style=\"width: 100%; border-style: solid; border-color: #000000; background-color: rgba(184, 165, 217, 0.53); text-align: left; vertical-align: middle;\">\n<h2><span style=\"font-size: 18pt; color: #000000;\"><b>What is the Space Internet?<\/b><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; color: #000000;\">It is defined as the international connection that relies on satellites orbiting the earth.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; color: #000000;\">These satellites send and receive signals that connect to the internet service providers (ISPs).\u00a0<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400; color: #000000;\">It routes the signals to users&#8217; internet modems.\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400; color: #000000;\">It aims to provide internet access globally especially in remote areas.\u00a0<\/span><\/li>\n<\/ul>\n<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><\/div>\n<ul>\n<li><b>Starlink\u2019st-Generation Satellites:<\/b>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>The first-generation Starlink satellites<\/b><span style=\"font-weight: 400;\">:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><span style=\"font-weight: 400;\">It was launched as part of th<\/span><b>e initial phase of SpaceX&#8217;s satellite internet constellation.<\/b>\n<ul style=\"list-style-type: disc;\">\n<li><span style=\"font-weight: 400;\">These satellites operate in<\/span><b> low Earth orbit (LEO<\/b><span style=\"font-weight: 400;\">) to provide internet connectivity.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div class=\"vc_table_green\"><\/p>\n<table style=\"width: 99.8983%;\">\n<tbody>\n<tr>\n<th style=\"width: 100%; border-style: solid; border-color: #000000; background-color: rgba(184, 165, 217, 0.53); text-align: left; vertical-align: middle;\">\n<h3><span style=\"font-size: 16pt; color: #000000;\"><b>Radio waves\u00a0<\/b><\/span><\/h3>\n<ul>\n<li><span style=\"font-weight: 400; color: #000000;\">These are a type of electromagnetic radiation with the longest wavelengths and lowest frequencies.\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400; color: #000000;\">They can be naturally produced or artificially generated.<\/span><\/li>\n<li><span style=\"color: #000000;\"><b>Key Applications:<\/b><\/span>\n<ul>\n<li aria-level=\"2\"><span style=\"color: #000000;\"><b>Communication: <\/b><span style=\"font-weight: 400;\">Used for radio broadcasting, mobile phones, and satellite communication.<\/span><\/span><\/li>\n<li aria-level=\"2\"><span style=\"color: #000000;\"><b>Radar: <\/b><span style=\"font-weight: 400;\">Essential for navigation and weather tracking.<\/span><\/span><\/li>\n<li aria-level=\"2\"><span style=\"color: #000000;\"><b>Networking: <\/b><span style=\"font-weight: 400;\">Enables wireless internet and other data transmission.\u00a0<\/span><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><\/div>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><b>Second-Generation Satellites:<\/b>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><span style=\"font-weight: 400;\">Starlink\u2019s second-generation satellites emit UEMR 32 times brighter than the first generation.<\/span>\n<ul style=\"list-style-type: disc;\">\n<li style=\"font-weight: 400;\" aria-level=\"4\"><span style=\"font-weight: 400;\">It has also\u00a0 worsened the problem despite efforts to reduce radio leaks.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><span style=\"font-size: 18pt;\"><b>Benefits of Starlink Satellites<\/b><\/span><\/h2>\n<ul>\n<li><b>Global Coverage: <\/b><span style=\"font-weight: 400;\">Brings internet access to remote and underserved areas, reducing the digital gap.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Low Latency:<\/b><span style=\"font-weight: 400;\"> Provides low latency (20-40 ms) because of the satellites\u2019 low Earth orbit which make it good for real-time activities like video calls and online gaming.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Quick Setup<\/b><span style=\"font-weight: 400;\">: Can be set up faster than traditional ground-based networks which\u00a0 makes it ideal for<\/span><b> emergencies and disaster zones.<\/b><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><span class=\"vc_button\"><a href=\"https:\/\/store.pw.live\/govt-entrance-exams\/upsc-books?utm_source=SEO&#038;utm_medium=PW+Live&#038;utm_campaign=UPSC+CSE+Books\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">Check Out UPSC CSE Books From PW Store<\/span><\/a><\/span><\/p>\n<h3><span style=\"font-size: 16pt;\"><b>Limitations<\/b><\/span><\/h3>\n<ul>\n<li><b>Limited coverage: <\/b><span style=\"font-weight: 400;\">starlink satellites are not suitable for crowded cities due to its high demand and its infrastructure.\u00a0<\/span><\/li>\n<li><b>Radio Pollution:<\/b><span style=\"font-weight: 400;\"> It can interfere with\u00a0 radio signals\u00a0 which can make its study hard for that period.\u00a0<\/span><\/li>\n<li aria-level=\"1\"><b>Visibility: <\/b><span style=\"font-weight: 400;\">These satellites are highly reflective and visible which can disrupt astronomical observations.<\/span><b>\u00a0<\/b><\/li>\n<\/ul>\n<h3><span style=\"font-size: 16pt;\"><b>Need for Regulations on Satellite Emissions<\/b><\/span><\/h3>\n<ul>\n<li><b>Increasingly bright satellites:<\/b><span style=\"font-weight: 400;\"> Starlink&#8217;s new generation of satellites is significantly brighter than the previous one, despite efforts to reduce radio frequency interference (RFI).<\/span><\/li>\n<li aria-level=\"1\"><b>Growing number of satellites: <\/b><span style=\"font-weight: 400;\">The number of satellites in orbit is expected to increase dramatically in the coming years which can exacerbate the problem of RFI.<\/span><\/li>\n<li aria-level=\"1\"><b>Lack of regulations: <\/b><span style=\"font-weight: 400;\">Currently, there are no specific regulations governing satellite emissions.<\/span><\/li>\n<\/ul>\n<div class=\"vc_table_green\"><\/p>\n<table style=\"width: 99.8983%;\">\n<tbody>\n<tr>\n<th style=\"width: 100%; border-style: solid; border-color: #000000; background-color: rgba(184, 165, 217, 0.53); text-align: left; vertical-align: middle;\"><span style=\"color: #000000;\"><b>Space Internet Projects in Low Earth Orbit<\/b><\/span><\/p>\n<ul>\n<li aria-level=\"1\"><span style=\"color: #000000;\"><b>One Web: <\/b><span style=\"font-weight: 400;\">It is a global satellite internet project.\u00a0<\/span><\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"color: #000000;\"><span style=\"font-weight: 400;\">It uses a large<\/span><b> constellation of satellites in Low Earth Orbit to offer <\/b><span style=\"font-weight: 400;\">internet services.\u00a0<\/span><\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400; color: #000000;\">It also aims to provide services in rural and remote areas with limited internet options.\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"color: #000000;\"><b>Project Kuiper: <\/b><span style=\"font-weight: 400;\">It is Amazon&#8217;s initiative to provide satellite based internet service globally.\u00a0<\/span><\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400; color: #000000;\">Similar to one web, it aims to offer\u00a0 services in rural and remote areas with limited internet options.\u00a0<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><\/div>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><span style=\"font-weight: 400;\">There is only\u00a0 voluntary cooperation between satellite operators and astronomers.<\/span><\/li>\n<\/ul>\n<\/li>\n<li aria-level=\"1\"><b>Need for regulation: <\/b><span style=\"font-weight: 400;\">To minimize the impact of satellite emissions on astronomical observations, regulations are necessary to set limits on RFI levels and ensure compliance.<\/span><\/li>\n<\/ul>\n<p style=\"text-align: center;\"><span class=\"vc_button\"><a href=\"https:\/\/www.pw.live\/batches\/upsc\/pw-only-ias?utm_source=seo+upsc+batch&#038;utm_medium=seo+upsc&#038;utm_campaign=seo&#038;utm_id=upsc\" target=\"_blank\" rel=\"nofollow noopener\">Enroll now for UPSC Online Classes<\/a><\/span><\/p>\n<div class=\"vc_table_green\"><\/p>\n<table style=\"width: 99.8997%;\">\n<tbody>\n<tr>\n<td style=\"width: 100%;\">\n<h2><span style=\"font-size: 18pt;\"><b>About Radio Astronomy<\/b><\/span><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Radio astronomy observes space objects using radio waves, which are longer than visible light.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Radio telescopes detect these radio waves, unlike regular telescopes that detect light.<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Bright light can make it hard to see objects, and the same happens with radio waves when satellites interfere.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The radio waves from satellites overwhelm telescopes which make it hard for scientists to study space properly.<\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-133543\" src=\"https:\/\/pwonlyias.com\/stage\/wp-content\/uploads\/2024\/09\/215-66eec6cb70e62.webp\" alt=\"Starlink satellites\" width=\"700\" height=\"329\" srcset=\"https:\/\/pwonlyias.com\/stage\/wp-content\/uploads\/2024\/09\/215-66eec6cb70e62.webp 900w, https:\/\/pwonlyias.com\/stage\/wp-content\/uploads\/2024\/09\/215-66eec6cb70e62-300x141.webp 300w, https:\/\/pwonlyias.com\/stage\/wp-content\/uploads\/2024\/09\/215-66eec6cb70e62-768x361.webp 768w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><\/div>\n<div class=\"vc_table_green\"><\/p>\n<table style=\"width: 100.028%;\">\n<tbody>\n<tr>\n<td style=\"width: 137.914%; 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