رد حاسم من اتحاد الكرة على مغادرة ميكالي منتخب مصر وتولي تدريب الزمالك - الوطن



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Researcher calculates Santa's speed on Christmas Eve—and this is what it would do to Rudolph's nose - Phys.org
Novel molecular design achieves 1,300-fold increase in scintillator radioluminescence - Phys.org

Rare fossil embryos show early Ecdysozoa development in Cambrian era - Phys.org
Timescape: Dark energy doesn't exist, resulting in 'lumpy' universe expansion - Earth.com