太阳隐藏着的小兄弟威胁着地球

　　Suns Hidden Twin Stalks Planet Earth

　　　　[1] When the end of the world comes， well know what to blame. Scientists have found compelling evidence that the Sun has a baby brother， a dark star whose eccentric orbit is responsible for periodically showering the Earth with comets and meteorites.

　　　　[2] The dark starnamed Nemesis by astronomersis thought to be a brown dwarf that spins round the Sun in an orbit so large it is measured in light years， the distance light travels in a year， equivalent to about 6，000 billion miles.

　　　　[3] The research suggests that， every 26m years， the stars eccentric orbit brings it within one light year of the solar system. There it causes havoc in the Oort Cloud， a huge region surrounding the solar system that contains billions of bits of cosmic rubble left over from the formation of planets.

　　　　[4] Of the millions of rocks it throws out of orbit at each visit， some hurtle Earthwardsand have several times nearly wiped out life on Earth.

　　　　[5] Astronomers have long wondered if the Sun has a smaller partner. Recently， two independent groups of researchers have found evidence of one.

　　太阳隐藏着的小兄弟威胁着地球

　　　　[1]当世界末日来临时我们将知道该去责备什么。科学家们已发现明显的迹象表明：太阳有一个小弟弟，它是一颗暗星，其偏心轨道导致彗星群和流星雨周期性降落地球。

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