![]() ![]() It will also help us map out places we need to explore more. Scientists will have a better picture of how big the universe is once DESI finishes its mission. Carlos Frenk, a cosmologist with Durham University in the UK recently told the BBC that DESI will help search for clues about dark energy’s nature.įurthermore, this will provide more information about dark matter and how it helps the formation of galaxies. Dark energy makes up around 70 percent of the universe, and it plays a big part in speeding up its expansion. The main objective of DESI is to reveal more about the dark energy found throughout the universe. DESI’s main objective Image source: Denis Rozhnovsky/Adobe When looking at a map of the universe, this is important for measuring distance. The greater the redshift, the farther away the item emitting it is. ![]() This allows us to give depth to the universe. Watching the redshift allows astronomers to determine how far away the light came from. Redshifting is a measure of how much the light has been pushed towards the red end of the spectrum. This map uses graphic leaps of scales to show how our solar system fits within the vastness of the universe. Each, like the Milky Way, is an island galaxy containing billions of stars. DESI can then use these images to measure how much the light it captures has redshifted. As far as we can see with our ever-improving telescopes, there are at least a hundred billion galaxies arrayed throughout the universe. These fibers allow DESI to capture color spectrum images of the galaxies. Scientists can control and position each one exactly as needed. Over 5,000 optical fibers make up the instrument. Despite only being seven months into the survey run, DESI has smashed through all of the previous records for mapping the universe. Some of the scientists with DESI presented the instrument’s performance so far at a Berkeley Lab-hosted webinar recently. This is the largest map of the universe ever Image source: D. ![]()
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