This specific time period, which is referred to as the epoch of reionization, is when much of the gas that clouded energetic light in the early universe disappeared in a process called reionization. Using data from Webb, a team within JADES, led by Ryan Endsley from the University of Texas at Austin, investigated galaxies that existed between 500 million and 850 million years after the formation of the universe. “With JADES, we want to answer a lot of questions, like: How did the earliest galaxies assemble themselves? How fast did they form stars? Why do some galaxies stop forming stars?” said JADES co-lead Marcia Rieke of the University of Arizona. Much of the JADES data has yet to come in, but the team is already making groundbreaking discoveries that will change astrophysics and cosmology forever. JADES is one of the largest programs to have been awarded time during Webb’s first year of science, with 32 days of that first year being devoted to collecting data for JADES and creating incredible deep fields. (Credit: NASA/ESA/CSA/Brant Robertson/Ben Johnson/Sandro Tacchella/Marcia Rieke/Daniel Eisenstein/Alyssa Pagan) An area of the sky known as GOODS-South is seen in this image, with over 45,000 galaxies dotting the black sea of space. Webb’s increased mirror size, powerful instruments, and sensitivity to infrared have allowed it to create some of the deepest deep fields of all time, with one of the first deep fields from JADES spotting galaxies that existed when the universe was less than 600 million years old - and incredible feat given Webb’s young age.Ī deep field taken by Webb as part of JADES. Webb’s mirror, launched with the observatory in December 2021, is nearly three times larger than Hubble’s mirror, coming in at 6.5 meters. However, Hubble is only so powerful and is limited by its 2.4-meter mirror. Hubble’s 1995 deep field is among the most popular images of our universe ever created, and subsequent deep fields have allowed scientists to peer deeper and deeper into our universe by increasing exposure times. Within the fields of astrophysics and cosmology, one question has existed in the minds of scientists for centuries - when did our universe form, and how did the first stars and galaxies form? Throughout the last few decades, several telescopes, such as the Hubble Space Telescope and ground-based observatories, have been used to create massive mosaics of portions of the sky called deep fields. JADES Data Reveals 45,000 Galaxies, Unveils Early Universe’s Secrets Behind the dust within the galaxy’s bars were hundreds of gas bubbles where young, hot stars are forming and growing. The JWST advanced deep extragalactic survey (JADES) utilized Webb’s incredible deep-field surveying abilities to create a deep field that shows over 45,000 galaxies and uncovers some of the secrets of the early universe.Īnother team took advantage of Webb’s immense sensitivity to infrared light to peer behind the thick dust within the bars of a barred spiral galaxy. With help from the joint NASA/European Space Agency/Canadian Space Agency James Webb Space Telescope (JWST), scientists are peering deep into the universe and uncovering secrets that were previously hidden from visible and X-ray telescopes.
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