{"id":22577,"date":"2024-04-17T10:37:49","date_gmt":"2024-04-17T05:07:49","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=22577"},"modified":"2025-10-07T13:12:05","modified_gmt":"2025-10-07T07:42:05","slug":"gaia-bh3","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/gaia-bh3\/","title":{"rendered":"What is Gaia-BH3?"},"content":{"rendered":"<h2>About Gaia-BH3<\/h2>\n<ul>\n<li>It is the <strong>most massive stellar black hole<\/strong> yet discovered <strong>in the Milky Way galaxy<\/strong>.<\/li>\n<li>This black hole was <strong>spotted in data from<\/strong> the <strong>European Space Agency\u2019s Gaia mission<\/strong> because it imposes an odd \u2018wobbling\u2019 motion on the companion star orbiting it.\u00a0\n<ul>\n<li>The researchers used the European Southern Observatory\u2019s Very Large Telescope in Chile\u2019s Atacama Desert and other ground-based observatories to confirm the mass of Gaia BH3.<\/li>\n<\/ul>\n<\/li>\n<li>It has a <strong>mass<\/strong> that is nearly <strong>33 times that ofoursun<\/strong>, and it\u2019s located <strong>1,926 light-years away in<\/strong> the <strong>Aquila constellatio<\/strong>n, making it the <strong>second-closest known black holeto Earth.<\/strong>\n<ul>\n<li>The closest <a href=\"https:\/\/vajiramandravi.com\/upsc-exam\/black-hole\/\" target=\"_blank\">black hole<\/a> is Gaia BH1, which is located about 1,500 light-years away and has a mass that is nearly 10 times that of our sun.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Most Massive Black Hole in Milky Way galaxy: <\/strong>The title for the most massive black hole in our galaxy will always belong to <strong>Sagittarius A*,<\/strong> the <strong>supermassive black hole<\/strong> located at <strong>the center of the Milky Way<\/strong>, which has about <strong>4 million times<\/strong> the <strong>mass of the sun,<\/strong> but that is because it\u2019s a supermassive black hole, rather than a stellar black hole.<\/li>\n<\/ul>\n<p><strong>Stellar black hole vs Supermassive black hole<\/strong><\/p>\n<ul>\n<li><strong>Stellar-mass black holes<\/strong> are <strong>formed from<\/strong> the <strong>gravitational collapse of a single staror<\/strong> from the <strong>merger of two neutron stars<\/strong>.<\/li>\n<li>Therefore, stellar-mass black holes have <strong>masses similar to<\/strong> the masses of <strong>stars<\/strong>.<\/li>\n<li>More specifically, stellar-mass black holes have <strong>masses ranging from<\/strong> about <strong>3 times<\/strong> the mass of our sun <strong>to about 50 times<\/strong> the <strong>mass of our sun.<\/strong><\/li>\n<li>In contrast, <strong>supermassive black holes<\/strong> have a <strong>mass greaterthan<\/strong> about <strong>50,000 times<\/strong> the <strong>massof our sun<\/strong> and are typically millions to billions of times the mass of our sun.<\/li>\n<li>Supermassive black holes are far too large to have formed from the gravitational collapse of a single star.<\/li>\n<li>However, <strong>scientists do not currently know how supermassive black holes form<\/strong>.<\/li>\n<li>Supermassive black holes are <strong>always found at the center of a galaxy<\/strong> and almost <strong>all galaxies have a supermassive black hole<\/strong> at its center.\u00a0<\/li>\n<\/ul>\n<p>This seems to suggest that each supermassive black hole is formed as part of the formation of its galaxy.<\/p>\n<hr \/>\n<h3>Q1: What is a Black hole?<\/h3>\n<p>A black hole is a region in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, it is difficult to detect a black hole. The largest black holes are called &#8220;supermassive.&#8221; These black holes have masses that are more than 1 million suns together. Albert Einstein first predicted the existence of black holes in 1916, with his general theory of relativity.<\/p>\n<p><strong>Source: <\/strong><a href=\"https:\/\/edition.cnn.com\/2024\/04\/16\/world\/milky-way-massive-stellar-black-hole-scn\/index.html\" target=\"_blank\" rel=\"nofollow noopener\"><u>Astronomers spot a massive \u2018sleeping giant\u2019 black hole less than 2,000 light-years from Earth<\/u><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gaia-BH3 is the most massive stellar black hole yet discovered in the Milky Way galaxy. <\/p>\n","protected":false},"author":5,"featured_media":22578,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-22577","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\/22577","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=22577"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/22577\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/22578"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=22577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=22577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=22577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}