{"id":17304,"date":"2024-12-09T02:38:35","date_gmt":"2024-12-08T21:08:35","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=17304"},"modified":"2025-04-05T03:26:56","modified_gmt":"2025-04-04T21:56:56","slug":"nova","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/nova\/","title":{"rendered":"What is Nova?"},"content":{"rendered":"<h2><strong>About Nova:<\/strong><\/h2>\n<ul>\n<li>It is a special class of <strong>transient astronomical event<\/strong> that causes the sudden appearance of a bright, apparently new star that slowly fades over weeks or months, during their outburst.<\/li>\n<li>Novae occur <strong>in binary star systems<\/strong> where a dense, Earth-sized white dwarf star orbits closely with a Sun-like companion.<\/li>\n<li>The white dwarf&#8217;s strong gravitational pull draws matter from its companion, creating an intense accumulation of material on its surface.<\/li>\n<li>This process triggers powerful thermonuclear reactions, producing a sudden bright burst visible as a nova.<\/li>\n<li>A nova reaches <strong>maximum luminosity within hours<\/strong> after its outburst and may shine intensely for several days\u00a0<\/li>\n<\/ul>\n<p><strong>Significance of the research<\/strong><\/p>\n<ul>\n<li>Researchers discovered ultraviolet <strong>emission from 42 novae<\/strong>, a special class of stellar explosions, and even caught four of them in the act of outburst itself.<\/li>\n<li>This could help scientists study these <strong>interacting binary star systems<\/strong> in our nearest neighbor galaxy at <strong>different phases of their life<\/strong>, some piling up matter from their companion, while others spewing it into space.<\/li>\n<\/ul>\n<p><strong>Key facts about the Andromeda galaxy<\/strong><\/p>\n<ul>\n<li>The Andromeda Galaxy, also <strong>called Messier 31 or M31<\/strong>, is the nearest major galaxy to the Milky Way.\u00a0<\/li>\n<li>It is <strong>2.5 million light years away<\/strong> from Earth and is the other major member of the Local Group, our local collection of galaxies.\u00a0<\/li>\n<li>Like the Milky Way, it is a <strong>barred spiral galaxy<\/strong>, so-called for the bar-like structure formed by the stars in its center<\/li>\n<\/ul>\n<hr \/>\n<h3>Q1: What is a white dwarf?<\/h3>\n<p>It is the stellar core left behind after a dying star has exhausted its nuclear fuel and expelled its outer layers to form a planetary nebula. It is what stars like the Sun become after they have exhausted their nuclear fuel.<\/p>\n<p><strong>News: <\/strong><a href=\"https:\/\/www.thehindu.com\/sci-tech\/science\/in-a-first-iia-astronomers-spot-ultraviolet-emissions-from-novae-in-andromeda-galaxy\/article68961894.ece\" target=\"_blank\" rel=\"nofollow noopener\">In a first, Indian Institute of Astrophysics astronomers spot ultraviolet emissions from novae in Andromeda galaxy<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nova is a special class of transient astronomical event that causes the sudden appearance of a bright, apparently new star that slowly fades over weeks or months, during their outburst.<\/p>\n","protected":false},"author":5,"featured_media":17305,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-17304","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\/17304","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=17304"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/17304\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/17305"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=17304"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=17304"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=17304"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}