The sun will eventually engulf the Earth?.

<P Align=center> </ P> <P align=center> sun </ P> <P align=center> </ P> <P align=center> Earth </ P> <P> Technology Channel (http: ./ / tech. /) News: British astronomers first observed in the very distant stars, there is a brown dwarf and white dwarf is accompanied by the line, a phenomenon that proved, 这颗 brown dwarfs are not predictable as the scientific community .throughput rates are not as red giants, which scientists predict the future fate of the solar system planets have much help, because 50 billion years after the end of his tether when the sun, the earth will face the same fate of being swallowed. .The findings will be published this week in the UK "Nature" magazine. .</ P> <P> scientists estimate, the sun can still maintain a 50 billion years of fuel, 50 billion years the sun will come to the end of life. .By then, the sun's core temperature will increase by 4,000 times the volume increased thousands of times, becomes a red giant. .It will first annexation did not Mercury, then Venus, then the Earth. .Scientists previously thought, in the universe, the size range between stars and brown dwarf planets, when the stars of similar changes in the sun, they also did not avoid the fate of annexation. .</ P> <P> British scientists using ESO telescopes in Chile observed that the number WD0137-349 in the brown dwarf has miraculously avoided the annexation not be the fate of the red giant. .According to University of Leicester astronomer Matt • Burleigh said, 这颗 brown dwarf star about the size of the solar system, Jupiter, 55 times the mass of Jupiter, close to a white dwarf, its orbit is very small, and a white dwarf Huzhuan .circle requires only 2 hours, track running at 800,000 kilometers per hour. .Astronomers believe that brown dwarfs previous Fengyun from its star, it could be equivalent to the distance from Earth to the sun. .</ P> <P> Burleigh said that the findings attracted the interest astronomers, they would like to know whether there are even smaller extrasolar star red giant physical spared no annexation. .But Burley believes that when the sun reached the end of life, the earth would be difficult to escape the fate of being swallowed up, because the mass of the Earth compared with the brown dwarf is too small, and Jupiter can survive when it is difficult to speculate. .</ P> <P> However, brown dwarfs and white dwarfs Fengyun the distance is very close, according to Einstein's theory of relativity predicted that the distance between the two stars will slowly become smaller. .Alf that the University of Hertfordshire, about 1.4 billion years after the two stars of the orbital period will be shortened to 1 hour, then two weeks away as too close to the white dwarf will be like a giant vacuum cleaner, as absorption of its companion .gas, ultimately, 这颗 escape the white dwarf or a brown dwarf to bring its total destruction. .</ P> </ p>.