Mở rộng giới hạn của sự sống trên hành tinh
Cập nhật: 14:34 09/01/2014 GMT+7
Các hành tinh cỡ Trái đất có thể hỗ trợ sự sống ở khoảng cách gấp 10 lần mức tối đa so với tính toán trước đây.
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