Building a Giant 2D Map of the Universe to Prepare for the Largest 3D Map
Nearly 200 researchers pitched in to gather, process, and stitch together images for half of the sky to prepare for the start of the Dark Energy Spectroscopic Instrument’s observations
January 13, 2021
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This video describes the monumental effort that went into constructing a 2D map of the universe to prepare for the Dark Energy Spectroscopic Instrument, which will produce the largest-ever 3D map of the universe. The final data release for the preparation of this 2D map, known as Data Release 9 or DR9, was distributed Jan. 13. (Credit: Marilyn Sargent/Lawrence Berkeley National Laboratory)
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VIDEO: A simulated collision between two gas-rich galaxies. Part of the gas is ejected in large tails and as the galaxies get closer they merge to form a single system. view more
Credit: Jeremy Fensch, et al
Astronomers have looked nine billion years into the past to find evidence that galaxy mergers in the early universe could shut down star formation and affect galaxy growth.
New research led by Durham University, UK, the French Alternative Energies and Atomic Energy Commission (CEA)-Saclay and the University of Paris-Saclay, shows that a huge amount of star-forming gas was ejected into the intergalactic medium by the coming together of two galaxies.
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