Phát hiện “siêu sao Thổ” ngoài Hệ mặt trời
Cập nhật: 07:51 29/01/2015 GMT+7
Các nhà thiên văn học thông báo vừa phát hiện một hệ vành đai khổng lồ bao quanh ngôi sao lùn nâu/ngoại hành tinh nằm cách Trái đất hơn 430 năm ánh sáng.
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