comet-凯发k8官网

19-05-27 scientists proposed a new theory about the origin of oceans on earth. 科学家就地球上海洋的来源提出了一项新理论。 they suggested that comets played a key role in delivering the life-enabling water to our planet billions of years ago. the study publis...

17-06-04 graham hancock is an audacious autodidact who believes that long before ancient mesopotamia, babylonia and egypt there existed an even more glorious civilization. one so thoroughly wiped out by a comet strike around 12,000 years ago that nearly all...

15-07-02 the european space agency's rosetta spacecraft first began orbiting comet 67p/churyumov-gerasimenko in august 2014. almost immediately, scientists began to wonder about several surprisingly deep, almost perfectly circular pits on the comet's surface...