این مطالعه نشان داد سر دنباله دارها ممکن است سبز باشد، اما دم آنها هرگز سبز نیست

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سر بسیاری از دنباله دارها هنگام حرکت در آسمان شب به رنگ سبز روشن می درخشند – اما چرا؟

دنباله دارها، متشکل از گازهای یخ زده، سنگ ها و غبار، بقایای آن هستند تشکیل منظومه شمسی حدود 4.6 میلیارد سال پیش اجسام یخی با نزدیک شدن به خورشید خیلی سریع گرم می شوند که باعث می شود یخ سخت از طریق فرآیندی به نام تصعید مستقیماً به گاز تبدیل شود که درخشش سبز روشن را افزایش می دهد.



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