përjetësi

përjetësi

In astronomical terms, a unit of time equivalent to 1 billion years.

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التحسين

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نوع المصطلح: اسم
المرادف (المرادفات)
مسرد المصطلحات
المجال / النطاق: علم الفلك
الفئة: فلك عام
Company: Caltech
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المجال / النطاق: علم الفلك الفئة: المجرة

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