The research was conducted as a part of Sloan Digital Sky Survey (SDSS).

这项研究是斯隆数字巡天项目(SDSS)的一部分。

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The Sloan Great Wall was first discovered in 2003 from the Sloan Digital Sky Survey (SDSS).

斯隆长城是SDSS在2003年的第一个发现。

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The quasar is known as SDSS J0013+1523 and located about 1.6 billion light-years from Earth.

这一类星体叫做SDSS J0013+1523，位于离地球约16亿光年处。

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Astronomers captured the spectra of the two record breakers with a 3.5-metre (11.5 feet) telescope, located at the Apache Point Observatory in New Mexico, also the site of the SDSS telescope.

BBC: Most distant objects observed

Astronomers say that the key to SDSS's success in quasar spotting is its recording of precision digital data in five colours, which allows researchers to easily distinguish quasars from more common faint stars.

BBC: Most distant objects observed

In July, astronomers from the Sloan Digital Sky Survey (SDSS), which aims to map out a million galaxies, published a research paper in which they superimposed their own galaxy-clustering data on Wmap's microwave data.

BBC: NEWS | Science/Nature | Dark energy tops science class