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Sloan Digital Sky Survey Collaboration Releases New 3D Map of Universe | Astronomy

Largest 3D map of the universe ever created revealed by astrophysicists Sloan Digital Sky Survey Collaboration Releases New 3D Map of Universe | Astronomy
Kristine Garrett | 24 July, 2020, 01:14

Scientists have released the largest three-dimensional map of the Universe ever created that explains the most significant gaps in its history.

"We all know each the traditional historical past of the universe and its current growth historical past pretty properly, however there's a hard hole within the center 11 billion years, " stated cosmologist Kyle Dawson of the College of Utah, who led the SDSS workforce.

The guide depends on the most recent perceptions of the Sloan Digital Sky Survey (SDSS), named the "extended Baryon Oscillation Spectroscopic Survey" (eBOSS), with information gathered from an optical telescope in New Mexico more than six years.

This survey offered new insights into how the universe expanded during a time period that had been under-studied and provides detailed measurements of more than 2 million galaxies.

"In 2012, I launched the eBOSS project with the idea of producing the most complete 3D map of the Universe throughout the lifetime of the Universe, implementing for the first time celestial objects that indicate the distribution of matter in the distant Universe, galaxies that actively form stars and quasars", said Professor Jean-Paul Kneib, Director of the Laboratory of Astrophysics at the Ecole Polytechnique Fédérale de Lausanne (EPFL). For the part of the map relating to six billion years ago, they observed the oldest and reddest galaxies. What was missing was in the in-between. The mysterious invisible component in the universe we call "dark energy" has been thought to have something to do with this, but like many other phenomena in the universe it remains unexplained.

The map represents the combined effort of hundreds of scientists mapping the universe using the Sloan Foundation telescope for almost twenty years. But it's not almost done.

After analyzing several million galaxies and quasars, an worldwide consortium of scientists has retracted a more continuous history of the Universe.

"These studies allow us to connect all these measurements into a complete story of the expansion of the universe". It's well known that the rate of expansion is accelerating, but nailing down when this began has been tricky in the past. "The final eBOSS data products will remain a legacy, helpful to a broad range of users, from young students to amateur and professional astronomers", says SDSS-IV science archive scientist Joel Brownstein, research associate professor at the U. It is unlikely that this 10% difference is random due to the high precision and wide variety of data in the eBOSS database.

Scientists revealed on July 20 the largest-ever 3D map of the universe. Quasars are the brightest and most far-off items in the understood universe, in which a supermassive black hole, with a mass varying from millions to billions of times the mass of the sun, is surrounded by a gas.

"They will be an enormous asset as the next generation of galaxy surveys come online and attempt to resolve this conundrum [of dark energy and the universe expansion rate] - or, perhaps, reveal more surprises". In the next decade, future surveys may resolve the conundrum, or perhaps, will reveal more surprises.

The map reveals the composition of the universe. "Even with an advanced instrument such as the BOSS spectrograph, it took us a decade to observe enough faint galaxies and quasars to make the measurements that we are reporting today".

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