2011-05-26 14:32
Scientists unveil most complete ever map of the universe that extends to 380 million lightyears away
The most complete 3D map of the local universe has been unveiled by British astronomers, dailymail.co.uk reported Wednesday. The 2MASS Redshift Survey (2MRS) from the University of Portsmouth extends to a distance of 380 million light years and has taken 10 years to complete, the report said. It extends closer than previous surveys to the galactic plane ― a region that is generally obscured by dust. The survey has mapped in detail areas previously hidden behind the Milky Way to better understand the impact they have on its motion in relation to the rest of the universe, it said. Karen Masters from the University of Portsmouth presented the map in a press conference at the 218th meeting of the American Astronomical Society in the Harvard-Smithsonian Center for Astrophysics (CfA) in Cambridge, Massachusetts, the Daily Mail said. She said: “The 2MASS Redshift Survey is a wonderfully complete new look at the local universe ― particularly near the galactic plane. “A galaxy's light is 'redshifted' or stretched to longer wavelengths by the expansion of the universe. The farther the galaxy, the greater its redshift, so redshift measurements yield galaxy distances. “It's the vital third dimension in a 3D map and will enable cosmologists to study the area in much more detail.” ![]() 3억 8천억 광년까지 미치는 우주 3D지도 완성 영국의 천문학자들이 가장 완벽한 3D 우주지도를 내놨다고 데일리메일 인터넷판이 25일 보도했다. 포츠마우스대학교가 실시한 조사는 거리가 3억8천 광년에 이르고 이를 완성하는데 10년이 걸렸다고 이 보도는 전했다. 이번 조사는 이전의 조사보다 먼지로 흐릿한 지역인 은하면에 더 가까이 다가갔다. 이 조사는 이전에 은하계 뒤에 숨은 지역들까지 상세하게 지도에 담았다고 이 보도는 전했다. |