{"id":54401,"date":"2025-07-11T12:50:45","date_gmt":"2025-07-11T07:20:45","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=54401"},"modified":"2025-07-11T15:20:06","modified_gmt":"2025-07-11T09:50:06","slug":"polycyclic-aromatic-hydrocarbon","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/polycyclic-aromatic-hydrocarbon\/","title":{"rendered":"Polycyclic Aromatic Hydrocarbon"},"content":{"rendered":"<h2><b>Polycyclic Aromatic Hydrocarbon Latest News<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Recently, researchers from Australia, Sweden, and the UK studied the indenyl cation, C9H7+\u00a0 and revealed how Polycyclic aromatic hydrocarbons molecules survival in Taurus Molecular Cloud 1 (TMC1).<\/span><\/p>\n<h2><b>About Polycyclic Aromatic Hydrocarbon<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Polycyclic aromatic hydrocarbons (PAHs) are <\/span><b>flat, ring-shaped molecules<\/b><span style=\"font-weight: 400;\"> of <\/span><b>carbon and hydrogen.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Astronomers think they make up a fifth of all carbon in <\/span><b>interstellar space.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">There is a hypothesis that meteors brought PAHs from space to young earth and created the first building blocks of life, attaching important value to their ability to survive in space.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They have a <\/span><b>relatively low solubility in water<\/b><span style=\"font-weight: 400;\"> but are highly lipophilic and are soluble in most organic solvents.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">These hydrocarbons, on earth, are formed through <\/span><b>incomplete combustion or pyrolysis of organic materials,<\/b><span style=\"font-weight: 400;\"> such as fossil fuels and biomass<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">When PAHs collide with other particles or <\/span><b>absorb high-energy radiation<\/b><span style=\"font-weight: 400;\">, they can <\/span><b>have more internal energy<\/b><span style=\"font-weight: 400;\"> than their weakest chemical bond can handle.<\/span><\/li>\n<\/ul>\n<h2><b>Key Facts about Taurus Molecular Cloud 1<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It is a molecular cloud located in the <\/span><b>constellation Taurus about 430 lightyears away<\/b><span style=\"font-weight: 400;\"> from Earth.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It is a collection of <\/span><b>gas, dust, and plasma.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It is known for <\/span><b>its cold and dense conditions<\/b><span style=\"font-weight: 400;\">, which are favorable for the formation of complex molecules.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The cloud is primarily composed of <\/span><b>molecular hydrogen<\/b><span style=\"font-weight: 400;\"> (H2), with other molecules such as carbon monoxide (CO), ammonia (NH3), and various organic compounds also present.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">In Taurus Molecular Cloud 1 (TMC1), <\/span><b>small closed-shell PAHs<\/b><span style=\"font-weight: 400;\"> \u2014 molecules whose electrons are in pairs \u2014 appear in greater quantities even though they are constantly exposed to starlight that should have destroyed them.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The team found that the <\/span><b>PAHs<\/b><span style=\"font-weight: 400;\"> have a <\/span><b>mechanism to cool rapidly,<\/b><span style=\"font-weight: 400;\"> letting them accumulate in TMC1 over time.<\/span><\/li>\n<\/ul>\n<p><b>Source: <\/b><a href=\"https:\/\/www.thehindu.com\/newsletter\/newsletter-science\/science-for-all-organic-molecules-survive-in-space-thanks-to-energy-release-valve\/article69791593.ece\" target=\"_blank\" rel=\"nofollow noopener\"><b>TH<\/b><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Polycyclic Aromatic Hydrocarbons (PAHs) are flat, ring-shaped molecules made of carbon and hydrogen, commonly found in fossil fuels and combustion byproducts. Read more about Polycyclic Aromatic Hydrocarbon, Key Facts, Examples, Latest News<\/p>\n","protected":false},"author":24,"featured_media":54414,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[1471,21,22,23],"class_list":{"0":"post-54401","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-polycyclic-aromatic-hydrocarbon","9":"tag-prelims-pointers","10":"tag-upsc-current-affairs","11":"tag-upsc-prelims-current-affairs","12":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/54401","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\/24"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=54401"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/54401\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/54414"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=54401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=54401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=54401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}