13 billion years ago, the birth of the Milky Way's oldest stars.

Hong Kong Observatory and the University of Tokyo, Japan <P> scientists recently discovered a birth in the early universe, is considered the oldest Milky Way galaxy of stars. .The findings published in the April 14 issue of the British "Nature" magazine. .</ P> <P> Zheke number "HE1327D2326" stars in the "Hydra" direction, away from the Earth about 1,500 to 4,000 light years, close to the solar system; brightness rating of 13.5, slightly higher than the sun surface temperature of 61807 ℃ .. .The surface temperature can be inferred about the quality of its 70% of the sun. .</ P> <P> spectrum analysis by the researchers, and by measuring the content of the elements in stars. .The results showed that the iron content of which is only 1 / 250000 Sun, content of heavy elements than the date at least 40% of stars is even lower. .The universe 14 billion years ago, after the big bang expansion, the initial birth of the so-called "first generation of stars," contains only hydrogen, helium and other light elements, but not in heavy elements, represented by iron. .Therefore, very few heavy elements with the stars, generally considered to be formed in the early universe. .</ P> <P> according to the researchers estimated that the star has more than 130 million years old, is about 700 million years after the big bang birth. .Estimated to be the "first generation star" quality in the remaining smaller one down, perhaps the first generation of stars may be generated after the outbreak of the second generation of stars. .</ P> <P> National Astronomical Observatory of Japan, Senior Researcher, Aoki and light, said: "understanding the universe and the birth of the characteristics of the early stars of great significance." At present, the research team has begun "to proceed with the formation of the universe during the first stars." .</ P> <P> under a more exciting: Everest: Kangxi's first </ P> <P> most mysterious of the strangest, most incredible of all in Discovery </ P> <P> </ .P> </ p>.