{"id":8008,"date":"2023-04-09T04:24:38","date_gmt":"2023-04-08T22:54:38","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=8008"},"modified":"2025-03-29T00:18:59","modified_gmt":"2025-03-28T18:48:59","slug":"cassiopeia-a","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/cassiopeia-a\/","title":{"rendered":"Cassiopeia A"},"content":{"rendered":"<h2><strong>About Cassiopeia A:<\/strong><\/h2>\n<ul>\n<li>It is <strong>a remnant of a massive star<\/strong> that exploded some 340 years ago.\u00a0<\/li>\n<li>It is the youngest remnant off the massive star in our galaxy known to mankind.<\/li>\n<li>Cas A belongs to the prototypical type of supernova remnant and has been extensively studied by a number of ground-based and space-based observatories,<\/li>\n<li>The remnant spans about <strong>10 light-years<\/strong> and is located 11,000 light-years away in the <strong>constellation Cassiopeia.<\/strong>\u00a0<\/li>\n<li>It gives information related to the <strong>supernovae phenomenon<\/strong> and its complexities.<\/li>\n<\/ul>\n<h3>What is supernova explosion?<\/h3>\n<ul>\n<li>It is the <strong>explosion of a star<\/strong> and is the largest explosion that takes place in space.<\/li>\n<li>It happens when <strong>there is a change in the core, or center, of the star<\/strong>. A change can occur in two different ways, with both resulting in a supernova.<\/li>\n<li><strong>The first type of supernova happens in binary star systems<\/strong>:\n<ul>\n<li>Binary stars are two stars that orbit the same point. One of the stars, a carbon-oxygen white dwarf, steals matter from its companion star.<\/li>\n<li>Eventually, the white dwarf accumulates too much matter. Having too much matter causes the star to explode, resulting in a supernova.<\/li>\n<\/ul>\n<\/li>\n<li><strong>The second type of supernova occurs at the end of a single star\u2019s lifetime<\/strong>:\n<ul>\n<li>As the star runs out of nuclear fuel, some of its mass flows into its core. Eventually, the core is so heavy that it cannot withstand its own gravitational force.<\/li>\n<li>The core collapses, which results in the giant explosion of a supernova.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<hr \/>\n<h3>Q1) What is a constellation?<\/h3>\n<p>A constellation is a group of stars that appear to form a recognizable pattern or shape in the night sky when viewed from Earth.Some well-known constellations include Orion, Ursa Major.<\/p>\n<p><strong>Source:<\/strong>\u00a0<a href=\"https:\/\/www.ndtv.com\/science\/nasa-telescope-captures-never-before-seen-details-of-remnant-of-star-that-exploded-340-years-ago-3931329\" target=\"_blank\" rel=\"nofollow noopener\"><u>NASA Telescope Captures Never-Before-Seen Details Of Remnant Of Star That Exploded 340 Years Ago<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cassiopeia A is a remnant of a massive star that exploded some 340 years ago.<\/p>\n","protected":false},"author":5,"featured_media":8009,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-8008","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/8008","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=8008"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/8008\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/8009"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=8008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=8008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=8008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}