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日期：2014年9月19日
U.S. plans to build an asteroid defense system , called on ordinary people to participate.
U.S. Gravitational Wave Observatory observations upgrade 88 million light years away
Scientists discover new buildings Stonehenge
U.S. government proposed a new plan to fight Ebola
Quest world’s longest maze garden
Photographer captures stunning Northern Lights in Scotland
British ” cash cow” trunk dense overgrown coins.
