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...