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Now a 3D map of the universe which is the largest ever created
And you thought we were done mapping?

Now astronomers have created the largest ever map of the universe. And no, that's not Google Maps!

The map has been developed with the Sloan Digital Sky Survey (SDSS). The map has been developed entirely depending on the positions of quasars, the bright & distant points of light powered by supermassive black holes. The reason for this is that the immense brightness of the quasars makes them visible throughout the universe.

According to a report in Space Daily, the scientists used the Sloan Foundation Telescope to observe the quasars. During the first two years, the astronomers measured accurate 3D positions for more than 147,000 quasars. And depending upon the positions, the scientists developed a 3D map of the location of the quasars.

The scientists also made use of a technique known as "baryon acoustic oscillations" (BAOs), the present-day imprint of sound waves which travelled through the universe close to the time of its formation.

The BAO scale is used to measure distance between various objects in the universe including galaxies, starts, etc.

Is the map consistent with earlier researches done in this field? Yes.

The map of the universe is in agreement with the standard cosmology that has been developed by the astronomers over the past two decades. Also, according to the scientists, it is in conformation with Einstein's general theory of relativity.

The map can help scientists develop their understanding of the universe especially the dark energy. Dark energy is an unknown form of energy that is believed to permeate all of space. It is also considered responsible for accelerating the expansion of the universe. It also constitutes a vast majority of the space in universe. If the standard model of cosmology is believed to be correct, the dark energy contributes 68.3 per cent of the total energy to the present-day universe.

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