اسطرلاب ابزاریست که برای مطالعات ومحاسبات نجومی، بدست آوردن طول وعرض جغرافیایی، محاسبه درازای شب وروز و...
روز: اردیبهشت ۲۱, ۱۴۰۳
مریخ نورد « استقامت » «Perseverance» ساخت سال ۲۰۲۰ ناسا، روباتی است تقریبا به اندازه یک خودرو...
۱۱ شهریور ۱۴۰۵
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