{"id":46715,"date":"2025-05-04T11:08:16","date_gmt":"2025-05-04T05:38:16","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=46715"},"modified":"2025-05-19T11:19:04","modified_gmt":"2025-05-19T05:49:04","slug":"microgravity","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/microgravity\/","title":{"rendered":"Microgravity"},"content":{"rendered":"<h2>Microgravity Latest News<\/h2>\n<p>Researchers at the Indian Institute of Space Science and Technology (IIST) have developed a 3D computational model that shows microgravity consistently increases human core body temperature, which is crucial for long-duration space missions.<\/p>\n<h2>What is Microgravity?<\/h2>\n<ul>\n<li><strong>Microgravity<\/strong>\u00a0is a condition of\u00a0<strong>apparent weightlessness<\/strong>\u00a0experienced in space when objects are in\u00a0<strong>free-fall orbit around Earth<\/strong>.<\/li>\n<li><strong>Microgravity<\/strong>\u00a0does not mean the absence of gravity. At orbital altitudes (~250 miles above Earth),\u00a0<strong>gravity is ~89% as strong<\/strong>\u00a0as on Earth.<\/li>\n<li>Objects\u00a0<strong>appear to float<\/strong>\u00a0because they are in\u00a0<strong>continuous free fall around the Earth<\/strong>, a state first explained by\u00a0<strong>Isaac Newton&#8217;s orbiting cannonball thought experiment<\/strong>.<\/li>\n<li><strong>Weightlessness \u2260 no gravity<\/strong>; rather, it results from\u00a0<strong>free-fall motion<\/strong>, where objects, spacecraft, and astronauts all fall simultaneously.<\/li>\n<li>In such an environment,\u00a0<strong>physiological changes<\/strong>\u00a0occur, affecting\u00a0<strong>bones, muscles, blood circulation, metabolism<\/strong>, and\u00a0<strong>thermoregulation<\/strong>.<\/li>\n<li><strong>Thermoregulation<\/strong>\u00a0is the process by which the\u00a0<strong>human body maintains a stable core temperature<\/strong>. It is crucial during\u00a0<strong>long-duration space travel<\/strong>, where the\u00a0<strong>microgravity environment<\/strong>\u00a0significantly alters normal physiological responses.<\/li>\n<\/ul>\n<h2>Thermoregulation Model<\/h2>\n<ul>\n<li><strong>IIST&#8217;s Thermoregulation Model:\u00a0<\/strong>Developed a\u00a0<strong>3D computational model<\/strong>\u00a0to simulate how\u00a0<strong>heat moves through the human body<\/strong>\u00a0under microgravity.<\/li>\n<li>Incorporates\u00a0<strong>sweating<\/strong>,\u00a0<strong>shivering<\/strong>,\u00a0<strong>clothing effects<\/strong>,\u00a0<strong>organ heat<\/strong>, and\u00a0<strong>blood redistribution<\/strong>\u00a0to simulate real conditions.<\/li>\n<li><strong>Key findings of the model include<\/strong>:\n<ul>\n<li><strong>Hands and feet become cooler<\/strong>\u00a0in space over time.<\/li>\n<li><strong>Head, abdomen, and core body<\/strong>\u00a0regions become\u00a0<strong>warmer<\/strong>.<\/li>\n<li>During exercise in space, the\u00a0<strong>body temperature rises faster<\/strong>\u00a0than it does on Earth.<\/li>\n<li><strong>Core body temperature can rise from 36.3\u00b0C to 37.8\u00b0C<\/strong>\u00a0in 2.5 months of microgravity exposure.<\/li>\n<li>With exercise, the temperature may rise to\u00a0<strong>nearly 40\u00b0C<\/strong>, a potentially dangerous level.<\/li>\n<\/ul>\n<\/li>\n<li>The model\u2019s accuracy was\u00a0<strong>validated using past data<\/strong>\u00a0from astronauts onboard the\u00a0<strong>Mir Space Station<\/strong>\u00a0and the\u00a0<strong>International Space Station (ISS)<\/strong>. The predicted results matched historical observations.<\/li>\n<li>The model also estimates the\u00a0<strong>Universal Thermal Climate Index (UTCI)<\/strong>, which reflects how\u00a0<strong>hot or cold it feels<\/strong>\u00a0outside by factoring in\u00a0<strong>wind, humidity, and solar radiation<\/strong>.<\/li>\n<\/ul>\n<p><strong>Source:\u00a0<\/strong><a href=\"https:\/\/www.thehindu.com\/sci-tech\/science\/microgravity-increases-core-body-temperature-iist-model\/article69501348.ece\" target=\"_blank\" rel=\"nofollow noopener\">TH<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microgravity is a condition of apparent weightlessness experienced in space when objects are in free-fall orbit around Earth.<\/p>\n","protected":false},"author":11,"featured_media":46716,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[293],"class_list":{"0":"post-46715","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-microgravity","9":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/46715","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\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=46715"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/46715\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/46716"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=46715"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=46715"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=46715"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}