The latest data from the DESI Legacy Imaging Survey was released, showing the largest 2D map of the universe in the past. The DESI Legacy Imaging Survey is a project that seeks to deepen our understanding of dark energy by depicting how the universe has expanded over the past 12 billion years. To this end, data collected by telescopes around the world is processed by computers to create magnificent maps of the starry sky. For reference, the universe was born 13.77 billion years ago.
The added data this time is taken by the Dark Energy Survey outside the Milky Way Galaxy, and is observed unaffected by nearby cosmic motion. Dark energy is an unknown energy that is known to accelerate the expansion of the universe. Dark energy is said to make up 68% of the universe. The remaining 27% is dark matter, which is less than 5% of observable or ordinary matter.
In this data release, which marks the 10th anniversary, the celestial sphere is more than 20,000 square degrees, which accounts for half of the whole, and more than one billion galaxies at billions of light-years are sparkling on the space map. In addition, an image taken with a color filter is added, and infrared data as well as visible light data are added.
Officials from the NSF National Institute of Optical and Infrared Astronomy (NOIRLab) say that by adding near-infrared wavelength data to the legacy survey, the distant galactic red plane will be able to more accurately calculate the time until light reaches Earth from the galaxy.
Currently, the DESI project is conducting spectroscopic observations on more than 40 million galaxies out of more than 1 billion galaxies photographed by the legacy survey. It is important to conduct large-scale surveys that reveal the development or distribution of objects throughout the universe. Taken together, all research will allow humanity to gain a deeper understanding of the unknown origins of the universe and the evolution of matter and energy. Related information this placecan be found in