Nơi lạnh nhất trong vũ trụ có hình boomerang
Cập nhật: 07:50 30/01/2008 GMT+7
Tinh vân hình chiếc nơ bướm này nằm trong chòm sao Centaurusm, cách trái đất hơn 5.000 năm ánh sáng, và là nơi lạnh lẽo nhất trong vũ trụ.
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