Va chạm thiên hà tạo ra ’tam giác hình thành sao'
Ảnh chụp được NASA công bố hôm 22/2 cho thấy thiên hà NGC 2445 (lấp lánh hơn, ở bên phải) và thiên hà NGC 2444 (khuếch tán hơn, ở bên trái) đã có một vụ va chạm trực diện và đang đi qua nhau, kích hoạt một vườn ươm sao hình tam giác trông giống như "lát bánh pizza phiên bản vũ trụ".
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