{"id":104597,"date":"2020-11-26T07:07:57","date_gmt":"2020-11-26T07:07:57","guid":{"rendered":"https:\/\/www.edristi.in\/?p=104597"},"modified":"2020-11-26T07:08:10","modified_gmt":"2020-11-26T07:08:10","slug":"sentinel-6-michael-freilich-satellite","status":"publish","type":"post","link":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/sentinel-6-michael-freilich-satellite\/","title":{"rendered":"Sentinel-6 Michael Freilich Satellite"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Question: Sentinel-6, which has been launched recently as joint effort of US-European space program, is a-<br><\/strong>a) Military satellite<br>b) Navigational Satellite<br>c) Space Telescope<br>d) Global Ocean Monitor<br><strong>Answer: (d)<br>Related Facts:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>On November 21, 2020, the Sentinel-6 a US-European satellite was launched to undertake measurements regarding global sea level rise.<\/li><li>The satellite was projected into the orbit by SpaceX Falcon 9 rocket, from California\u2019s Vandenberg Air Force base.<\/li><li>The Sentinel-6 Michael Freilich satellite after acquiring its orbit deployed its solar panels and made the first contact with controllers at a ground station in Alaska.<\/li><li>NASA has renamed this key ocean observation satellite in honor of Earth scientist Michael Freilich, who retired last year as head of NASA\u2019s Earth Science division, a position he held since 2006.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Description of the Satellite:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Sentinel-6 is actually a series of two satellites Sentinel-6a and Sentinel-6b<\/li><li>The present one is Sentinel-6a, the first of two identical satellites &#8212; the second to be launched in five years.<\/li><li>Sentinel-6b will provide measurements of unprecedented precision until at least 2030.<\/li><li>The twin satellites will measure sea-level rise, tracking changes threatening to disrupt tens of millions of lives within a generation.<\/li><li>Each Sentinel-6 probe carries a radar altimeter, which measures the time it takes for radar pulses to travel to Earth\u2019s surface and back again.<\/li><li>The satellites will circle the planet in the same orbit as earlier missions that supplied sea-surface height data over the last three decades, mapping 95 percent of Earth\u2019s ice-free ocean every ten days.<\/li><li>The satellite\u2019s main instrument is an extremely accurate radar altimeter that will bounce energy off the sea surface as it sweeps over Earth\u2019s oceans.<\/li><li>In the next launch Sentinel-6B will ensure continuity of the record.<\/li><li>The Sentinel satellites are each about the size and shape of a large minivan topped with slanted solar panels and weigh nearly 1,200 kilos, including rocket fuel.<\/li><li>They are designed to last for five-and-a-half years but could provide data for far longer.<\/li><li>Europe and the United States are sharing the $1.1 billion (900 million euro) cost of the mission, which includes the twin satellite.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Sea level rise a grave problem:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Nearly 800 million people live within five metres of sea level, and even an increase in sea level of a few centimeters can translate into vastly more damage from high tides and storm surges.<\/li><li>Sea-surface heights are affected by heating and cooling of water, allowing scientist to use the altimeter data to detect such weather-influencing conditions as the warm El Nino and the cool La Nina.<\/li><li>The measurements are also important for understanding overall sea-level rise due to global warming that scientists warn is a risk to the world\u2019s coastlines and billions of people.<\/li><li>Karen St. Germain, NASA\u2019s Earth Science Division director said our Earth is a system of intricately connected dynamics between land, ocean, ice, atmosphere and also, of course, our human communities, and that system is changing,.<\/li><li>She explained that 70 percent of the Earth\u2019s surface is the ocean, the oceans play an enormous role in how the whole system changes.<\/li><\/ul>\n\n\n\n<p class=\"has-text-align-right wp-block-paragraph\"><strong>By &#8211; Rajesh Tripathi<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Links:-<\/strong><br><a href=\"https:\/\/www.firstpost.com\/tech\/science\/nasa-esa-launch-sentinel-6-michael-freilich-satellite-to-monitor-the-oceans-9042931.html\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.firstpost.com\/tech\/science\/nasa-esa-launch-sentinel-6-michael-freilich-satellite-to-monitor-the-oceans-9042931.html<br><\/a><a href=\"https:\/\/www.nasa.gov\/sentinel-6\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.nasa.gov\/sentinel-6<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Question: Sentinel-6, which has been launched recently as joint effort of US-European space program, is a-a) Military satelliteb) Navigational Satellitec) Space Telescoped) Global Ocean MonitorAnswer: (d)Related Facts: On November 21, 2020, the Sentinel-6 a US-European satellite was launched to undertake measurements regarding global sea level rise. The satellite was projected into the orbit by SpaceX [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":104600,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1123],"tags":[3067],"class_list":["post-104597","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-snes","tag-scientific"],"_links":{"self":[{"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/posts\/104597","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/comments?post=104597"}],"version-history":[{"count":1,"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/posts\/104597\/revisions"}],"predecessor-version":[{"id":104602,"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/posts\/104597\/revisions\/104602"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/media\/104600"}],"wp:attachment":[{"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/media?parent=104597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/categories?post=104597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.edristi.in\/hi\/%e0%a4%b9%e0%a5%8b%e0%a4%ae\/wp-json\/wp\/v2\/tags?post=104597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}