{"id":34913,"date":"2023-04-19T08:54:48","date_gmt":"2023-04-19T03:24:48","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=34913"},"modified":"2025-04-20T19:49:39","modified_gmt":"2025-04-20T14:19:39","slug":"isro-to-launch-singaporean-earth-observation-satellite-teleos-02","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/isro-to-launch-singaporean-earth-observation-satellite-teleos-02\/","title":{"rendered":"ISRO to Launch Singaporean Earth Observation Satellite TeLEOS-02"},"content":{"rendered":"<h3><strong>What\u2019s in today\u2019s article?<\/strong><\/h3>\n<ul>\n<li><strong>Why in News?<\/strong><\/li>\n<li><strong>About Earth Observation Satellite<\/strong><\/li>\n<li><strong>Applications of EOS<\/strong><\/li>\n<li><strong>ISRO\u2019s EOS Series<\/strong><\/li>\n<li><strong>About Polar Satellite Launch Vehicle (PSLV)<\/strong><\/li>\n<li><strong>News Summary<\/strong><\/li>\n<\/ul>\n<p><strong>\u00a0<\/strong><\/p>\n<h2><strong>Why in News?<\/strong><\/h2>\n<ul>\n<li>The Indian Space Research Organisation (ISRO) will launch Singapore\u2019s TeLEOS-2 satellite on April 22, from the Satish Dhawan Space Centre in Sriharikota.<\/li>\n<li>TeLEOS-2 is an <strong>earth observation satellite<\/strong>.<\/li>\n<li>The launch which will be carried out by the <strong>Polar Satellite Launch Vehicle (PSLV)<\/strong>.<\/li>\n<\/ul>\n<h2>\u00a0<\/h2>\n<h2><strong>About Earth Observation Satellite<\/strong><\/h2>\n<ul>\n<li>Earth observation satellite is also known as the Earth remote sensing satellite.<\/li>\n<li>As the name suggests, these satellites observe the planet Earth from space.<\/li>\n<li>The first EOS or remote sensing satellite was <strong>Sputnik 1<\/strong>, the first artificial satellite sent to Earth&#8217;s orbit by the Soviet Union in 1957.<\/li>\n<li>It was used to study the topmost layer of Earth&#8217;s atmosphere, the ionosphere.<\/li>\n<li>Most EOS <i><strong>operate at about 500 to 600 kilometres from the surface of the Earth<\/strong><\/i>.<\/li>\n<\/ul>\n<h2>\u00a0<\/h2>\n<h2><strong>Applications of EOS<\/strong><\/h2>\n<ul>\n<li>These satellites can be used for various purposes, including environmental monitoring, cartography, navigation and more.<\/li>\n<li>Military of different countries also use the Earth observation satellite for spying and communication.<\/li>\n<li>The most common example of applications of EOS are the images of Earth, or the view available in a popular Earth discovery application called <strong>Google Earth<\/strong>.<\/li>\n<\/ul>\n<h2>\u00a0<\/h2>\n<h2><strong>ISRO\u2019s EOS Series<\/strong><\/h2>\n<ul>\n<li>India currently has <strong><u>53 operational satellites, of which 21 are earth observation ones and another 21 are communication-based<\/u><\/strong>. Remaining are 8 navigation satellites and 3 science satellites.<\/li>\n<li>In November 2020, With EOS-01, ISRO shifted to a new naming system for its earth observation satellites which were earlier named thematically, according to the purpose they are meant for.\n<ul>\n<li>For example, the <strong>Cartosat <\/strong>series of satellites were meant to provide data for land topography and mapping, while the <strong>Oceansat<\/strong> satellites were meant for observations over sea.<\/li>\n<\/ul>\n<\/li>\n<li>Going forward, all earth observation satellites are named in the EOS-series \u2013\n<ul>\n<li><strong>EOS-01<\/strong> was launched successfully in November, 2020.<\/li>\n<li><strong>EOS-02<\/strong> is a microsatellite which will be launched in April, 2022.<\/li>\n<li>ISRO failed to put <strong>EOS-03<\/strong> into orbit, due to an unsuccessful attempt in August, 2021.<\/li>\n<li>In February 2022, ISRO successfully launched <strong>EOS-04<\/strong>.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u00a0<\/h2>\n<h2><strong>About Polar Satellite Launch Vehicle (PSLV)<\/strong><\/h2>\n<ul>\n<li>PSLV (Polar Satellite Launch Vehicle) is an <strong>indigenously-developed<\/strong> expendable launch system of the ISRO.<\/li>\n<li>PSLV has a <strong>four-stage system<\/strong> comprising a combination of solid and liquid-fuelled rocket stages.\n<ul>\n<li>The first stage at the very bottom is solid fuelled having six strap-on solid rocket boosters wrapped around it.<\/li>\n<li>Second stage is liquid fuelled whereas the third stage has a solid fuelled rocket motor.<\/li>\n<li>At the fourth stage, the launcher uses a liquid propellant to boost in the outer space.<\/li>\n<li>It is the <i><strong>first Indian launch vehicle to be equipped with liquid stages<\/strong><\/i>.<\/li>\n<\/ul>\n<\/li>\n<li>Its first successful launch took place in October <strong>1994<\/strong>.<\/li>\n<li>It can take up to <strong>1,750 kg of payload<\/strong> to Sun-Synchronous Polar Orbits of 600 km altitude.<\/li>\n<li>During 1994-2017 period, the vehicle had launched 48 Indian satellites and 209 satellites for customers from abroad.<\/li>\n<li>Besides, the vehicle successfully launched two spacecraft \u2013 <strong>Chandrayaan-1<\/strong> in 2008 and <strong>Mars Orbiter Spacecraft<\/strong> in 2013 \u2013 that later travelled to Moon and Mars respectively.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2><strong>News Summary<\/strong><\/h2>\n<ul>\n<li>The Indian Space Research Organisation (ISRO) is gearing up for another commercial launch when it will carry the Singaporean Earth Observation satellite <strong>TeLEOS-02<\/strong> on board the workhorse <strong>Polar Satellite Launch Vehicle<\/strong>.<\/li>\n<li>This will be the third launch of the year for ISRO \u2014 all three using different launch vehicles.<\/li>\n<li>With another commercial mission underway, the <i><strong>space agency is reinforcing the government\u2019s plan to increase India\u2019s share in the commercial market, increasing it from the current 2 per cent<\/strong><\/i>.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<hr \/>\n<h3><strong>Q1) What is meant by Low Earth Orbit?<\/strong><\/h3>\n<p>Low-Earth orbit (often known as LEO) encompasses Earth-centred orbits with an altitude of 2,000 km (1,200 mi) or less. For the purposes of the Commercial Use Policy, low-Earth orbit is considered the area in Earth orbit near enough to Earth for convenient transportation, communication, observation and resupply.<\/p>\n<p>&nbsp;<\/p>\n<h3><strong>Q2)<\/strong> <strong>What is Payload in Satellite?<\/strong><\/h3>\n<p>The scientific or technological instrument carried on board a satellite for the specific purpose is termed as a payload. Payloads vary in their purpose, size, composition, capabilities, etc.<\/p>\n<p>&nbsp;<\/p>\n<hr \/>\n<p><strong>Source:<\/strong>\u00a0<a href=\"https:\/\/indianexpress.com\/article\/technology\/science\/isro-singaporean-earth-observation-satellite-teleos-02-8562806\/\" target=\"_blank\" rel=\"nofollow noopener\"><u>Isro to launch Singaporean Earth Observation satellite TeLEOS-02 on Saturday<\/u><\/a>\u00a0|\u00a0<a href=\"https:\/\/www.thehindu.com\/news\/cities\/bangalore\/isro-to-launch-singapores-teleos-2-satellite-on-april-22\/article66751331.ece\" target=\"_blank\" rel=\"nofollow noopener\"><u>Hindu<\/u><\/a>\u00a0\u00a0\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ISRO will launch Singapore\u2019s TeLEOS-02 satellite with the help of polar satellite launch vehicle.<\/p>\n","protected":false},"author":5,"featured_media":34914,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[],"class_list":{"0":"post-34913","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\/34913","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=34913"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/34913\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/34914"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=34913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=34913"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=34913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}