{"id":15435,"date":"2025-04-10T11:24:29","date_gmt":"2025-04-10T11:24:29","guid":{"rendered":"https:\/\/exam.pscnotes.com\/current-affairs\/?p=15435"},"modified":"2025-04-10T11:25:41","modified_gmt":"2025-04-10T11:25:41","slug":"poem-4-the-fourth-verse","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/current-affairs\/poem-4-the-fourth-verse\/","title":{"rendered":"POEM-4: The Fourth Verse"},"content":{"rendered":"<ul>\n<li><strong>POEM-4 Re-entry:<\/strong> ISRO&#8217;s PSLV Orbital Experimental Module-4 (POEM-4) re-entered Earth&#8217;s atmosphere and impacted the Indian Ocean on April 4, 2025, at 8:03 am IST.<\/li>\n<li><strong>Mission Overview:<\/strong> POEM-4 was the spent fourth stage (PS4) of PSLV-C60, reconfigured as an orbiting platform for scientific experiments.<\/li>\n<li><strong>Launch Details:<\/strong> Launched on December 30, 2024, alongside twin SPADEX satellites to a 475 km altitude orbit. It was later de-orbited to a 350 km altitude.<\/li>\n<li><strong>Payloads:<\/strong> Hosted 24 payloads (14 from ISRO, 10 from non-government entities). Included the Walking Robotic Arm, Debris Capture Robotic Manipulator, and Gradient Control Reaction Wheel Assembly.<\/li>\n<li><strong>Mission Objectives:<\/strong> Aimed to conduct scientific experiments, including cowpea seed germination in microgravity and operating India&#8217;s first space robotic arm.<\/li>\n<li><strong>Tracking:<\/strong> Tracked by ISRO&#8217;s Radar Facilities and US Space Command, aiding in re-entry prediction.<\/li>\n<li><strong>Passivation:<\/strong> PS4 was passivated by venting leftover fuel to minimize accidental break-up risks.<\/li>\n<li><strong>Debris Mitigation:<\/strong> Safe re-entry demonstrates ISRO&#8217;s commitment to containing space debris and the Debris Free Space Mission (DFSM). This commitment is crucial for the long-term sustainability of space.<\/li>\n<li><strong>Monitoring:<\/strong> The re-entry was closely monitored by ISRO&#8217;s System for Safe and Sustainable Space Operations Management (IS4OM).<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>POEM-4 Re-entry: ISRO&#8217;s PSLV Orbital Experimental Module-4 (POEM-4) re-entered Earth&#8217;s atmosphere and impacted the Indian Ocean on April 4, 2025, at 8:03 am IST. Mission Overview: POEM-4 was the spent fourth stage (PS4) of PSLV-C60, reconfigured as an orbiting platform for scientific experiments. Launch Details: Launched on December 30, 2024, alongside twin SPADEX satellites to &#8230; <a title=\"POEM-4: The Fourth Verse\" class=\"read-more\" href=\"https:\/\/exam.pscnotes.com\/current-affairs\/poem-4-the-fourth-verse\/\" aria-label=\"Read more about POEM-4: The Fourth Verse\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":15450,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[595],"tags":[1270],"class_list":["post-15435","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-current-affairs","tag-08-04-25"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>POEM-4: The Fourth Verse - Current Affairs Exam<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/current-affairs\/poem-4-the-fourth-verse\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"POEM-4: The Fourth Verse\" \/>\n<meta property=\"og:description\" content=\"POEM-4 Re-entry: ISRO&#8217;s PSLV Orbital Experimental Module-4 (POEM-4) re-entered Earth&#8217;s atmosphere and impacted the Indian Ocean on April 4, 2025, at 8:03 am IST. 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Mission Overview: POEM-4 was the spent fourth stage (PS4) of PSLV-C60, reconfigured as an orbiting platform for scientific experiments. Launch Details: Launched on December 30, 2024, alongside twin SPADEX satellites to ... 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