{"id":626421,"date":"2026-01-18T23:39:30","date_gmt":"2026-01-18T22:39:30","guid":{"rendered":"https:\/\/cronologia-universale.it\/december-28-1973\/"},"modified":"2026-01-18T23:39:30","modified_gmt":"2026-01-18T22:39:30","slug":"september-21-1968","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/september-21-1968\/","title":{"rendered":"September 21, 1968"},"content":{"rendered":"<p>The Soviet Zond 5 probe, returning from the Moon with its cargo of bacteria, plants, flies, worms, and turtles, reentered the atmosphere with a severe deceleration of 16 g, and the capsule reached temperatures of several thousand degrees. The deceleration would have killed the cosmonauts on board but was not fatal for the animal and plant cargo.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Soviet Zond 5 probe, returning from the Moon with its cargo of bacteria, plants,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[41],"tags":[],"class_list":["post-626421","post","type-post","status-publish","format-standard","hentry","category-s-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>September 21, 1968 - Cronologia Universale<\/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:\/\/cronologia-universale.it\/en\/september-21-1968\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"September 21, 1968 - 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