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\u00dcnl\u00fc astrofizik\u00e7i Jonathon McDowell, Elon Musk<\/a>\u2019\u0131n SpaceX \u015firketine ait Starlink uydular\u0131n\u0131n h\u0131zla y\u00f6r\u00fcngeden \u00e7\u0131karak D\u00fcnya atmosferine d\u00fc\u015fmesinin, gezegenin stratosfer tabakas\u0131nda geri d\u00f6n\u00fc\u015f\u00fc olmayan hasarlara yol a\u00e7abilece\u011fini s\u00f6yledi.<\/p>\n Harvard-Smithsonian Astrofizik Merkezi\u2019nde 37 y\u0131l g\u00f6rev yapan McDowell, \u015fu anda her g\u00fcn bir ila iki Starlink uydusunun atmosfere girdi\u011fini, \u00f6n\u00fcm\u00fczdeki y\u0131llarda bu say\u0131n\u0131n g\u00fcnde be\u015f uyduya kadar \u00e7\u0131kabilece\u011fini belirtti.<\/p>\n McDowell, \u201cStratosfer zarar g\u00f6r\u00fcrse, \u00f6zellikle ozon tabakas\u0131 zay\u0131flarsa, yery\u00fcz\u00fcne ula\u015fan zararl\u0131 ultraviyole \u0131\u015f\u0131nlar\u0131 artar. Bu da cilt kanseri, katarakt ve g\u00f6z hasar\u0131 gibi ciddi sonu\u00e7lar do\u011furur\u201d dedi.<\/p>\n 8 B\u0130N STARL\u0130NK UYDUSU Y\u00d6R\u00dcNGEDE<\/strong><\/p>\n \u015eu anda SpaceX\u2019e ait 8 binden fazla uydu D\u00fcnya\u2019n\u0131n y\u00f6r\u00fcngesinde bulunuyor. \u015eirket bu y\u0131l i\u00e7inde 2 binden fazla yeni uydu f\u0131rlatt\u0131. <\/p>\n ABD Federal Havac\u0131l\u0131k Dairesi (FAA), Musk\u2019\u0131 2023\u2019te uyarm\u0131\u015f ve uydular\u0131n 2035 y\u0131l\u0131na kadar \u00f6l\u00fcmc\u00fcl kazalara neden olabilece\u011fini \u00f6ng\u00f6rm\u00fc\u015ft\u00fc.<\/p>\n FAA raporuna g\u00f6re, \u00f6n\u00fcm\u00fczdeki y\u0131llarda yakla\u015f\u0131k 28 bin par\u00e7a tehlikeli enkaz yeniden giri\u015f s\u0131ras\u0131nda atmosfere d\u00fc\u015febilir. Musk ise bu analizi \u201csa\u00e7ma ve as\u0131ls\u0131z\u201d olarak nitelendirmi\u015f, SpaceX m\u00fchendisi David Goldstein raporu \u201cderinlemesine hatal\u0131\u201d diye tan\u0131mlam\u0131\u015ft\u0131.<\/p>\n SpaceX, uydular\u0131n\u0131n \u201ctamamen yanacak \u015fekilde\u201d tasarland\u0131\u011f\u0131n\u0131 a\u00e7\u0131klasa da, \u015firket bu y\u0131l yapt\u0131\u011f\u0131 duyuruda baz\u0131 uydular\u0131n tamamen yok olmad\u0131\u011f\u0131n\u0131 kabul etti.<\/p>\n “KESSLER SENDROMU” TEHL\u0130KES\u0130<\/strong><\/p>\n McDowell, y\u00f6r\u00fcngedeki nesne say\u0131s\u0131n\u0131n h\u0131zla artmas\u0131n\u0131n Kessler sendromu ad\u0131 verilen zincirleme \u00e7arp\u0131\u015fma riskini do\u011furdu\u011funu s\u00f6yleyerek,\u00a0\u201cPlanlanan 30 bin Starlink uydusunun sadece y\u00fczde biri ar\u0131zalansa, bu 300 dev uydu eder. Bu say\u0131, d\u00fc\u015f\u00fck D\u00fcnya y\u00f6r\u00fcngesini Kessler sendromuna sokmaya yeter\u201d dedi.<\/p>\n \u00d6zellikle 600 ila 1000 kilometre aral\u0131\u011f\u0131ndaki y\u00f6r\u00fcngenin eski Sovyet roketleri ve di\u011fer enkazlarla dolu oldu\u011funu belirten bilim insan\u0131, bu b\u00f6lgeye yeni uydular eklemenin \u00e7arp\u0131\u015fma riskini art\u0131rd\u0131\u011f\u0131n\u0131 vurgulad\u0131.<\/p>\n ATMOSFERDE METAL B\u0130R\u0130K\u0130M\u0130 ARTIYOR<\/strong><\/p>\n Endi\u015feler yaln\u0131zca uzay \u00e7\u00f6pleriyle s\u0131n\u0131rl\u0131 de\u011fil. Uydular\u0131n atmosfere girerken yanmas\u0131 s\u0131ras\u0131nda a\u00e7\u0131\u011fa \u00e7\u0131kan metal buharlar\u0131, stratosferde al\u00fcminyum, lityum ve bak\u0131r gibi toksik metallerin birikmesine neden oluyor.<\/p>\n ABD Ulusal Okyanus ve Atmosfer Dairesi\u2019nden (NOAA) atmosfer kimyac\u0131s\u0131 Daniel Murphy, \u201cNeredeyse kimse bu uydular\u0131n stratosfer \u00fczerindeki etkisini d\u00fc\u015f\u00fcnm\u00fcyor\u201d dedi.<\/p>\n Murphy ve ekibinin yapt\u0131\u011f\u0131 \u00e7al\u0131\u015fmaya g\u00f6re, bu metaller s\u00fclf\u00fcrik asit aerosollerine kar\u0131\u015farak ozon tabakas\u0131n\u0131 tehdit edebilir. Al\u00fcminyum bile\u015fikleri, \u0131\u015f\u0131kla tepkimeye girerek klor sal\u0131n\u0131m\u0131n\u0131 art\u0131rabilir ve bu da ozonun par\u00e7alanmas\u0131na yol a\u00e7abilir.<\/p>\n “CEVAPLAR HALA BEL\u0130RS\u0130Z”<\/strong><\/p>\n