{"id":3690,"date":"2026-06-10T12:29:50","date_gmt":"2026-06-10T06:59:50","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=3690"},"modified":"2026-06-10T13:12:51","modified_gmt":"2026-06-10T07:42:51","slug":"what-is-sagittarius-a-sgr-a","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/what-is-sagittarius-a-sgr-a\/","title":{"rendered":"Sagittarius A*"},"content":{"rendered":"<h2><b>Sagittarius A* Latest News<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Recently, after 50 years of relentless research, astronomers have finally found evidence of wind blowing from Sagittarius A*.<\/span><\/p>\n<h2><b>About Sagittarius A*<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It is a <\/span><b>supermassive black hole<\/b><span style=\"font-weight: 400;\"> at the <\/span><b>Milky Way\u2019s Center.<\/b><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It was discovered in the 1970s.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It is <\/span><b>mostly dormant<\/b><span style=\"font-weight: 400;\"> and only occasionally absorbs gas or dust, but nonetheless has an estimated <\/span><b>mass 4.3 million times that of the sun.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It is located in the <\/span><b>constellation Sagittarius.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It has a diameter of around 14.6 million miles (23.5 million kilometers).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It is a <\/span><b>strong source of radio waves.<\/b><span style=\"font-weight: 400;\"> Most of the radio radiation is from a synchrotron mechanism, indicating the presence of free electrons and magnetic fields.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The event horizon of the black hole has a radius of 12 million km (7 million miles).<\/span><\/li>\n<\/ul>\n<h2><b>What is a Black hole?<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A black hole is a <\/span><b>region in space where gravity pulls<\/b><span style=\"font-weight: 400;\"> so much that even <\/span><b>light cannot get out.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Because no light can get out, it is difficult to detect a black hole.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The <\/span><b>largest black holes are called \u201csupermassive.\u201d<\/b><span style=\"font-weight: 400;\"> These <strong><a href=\"https:\/\/vajiramandravi.com\/upsc-exam\/black-hole\/\" target=\"_blank\">black holes<\/a><\/strong> have masses that are more than 1 million suns together.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Albert Einstein first predicted the existence of black holes in 1916, with his general theory of relativity.<\/span><\/li>\n<\/ul>\n<p><b>Source: <\/b><strong><a href=\"https:\/\/epaper.thehindu.com\/reader?utm_source=Hindu&amp;utm_medium=Menu&amp;utm_campaign=Header&amp;_gl=1*9v095e*_gcl_au*MTA0MzQ0OTM0My4xNzc0ODQ1MTU2LjI2ODQxNDgxOC4xNzgxMDY4NDYyLjE3ODEwNjg1MDc.\" target=\"_blank\" rel=\"nofollow noopener\">TH<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sagittarius A* is a supermassive black hole at the Milky Way\u2019s Center. Read more about Sagittarius A*, Location, Distance, Size, Latest News.<\/p>\n","protected":false},"author":5,"featured_media":107515,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[8049],"class_list":{"0":"post-3690","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-sagittarius-a","9":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/3690","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=3690"}],"version-history":[{"count":3,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/3690\/revisions"}],"predecessor-version":[{"id":107519,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/3690\/revisions\/107519"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/107515"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=3690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=3690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=3690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}