Scientists from Rochester Institute of Technology have used data from the James Webb Space Telescope (JWST) to make new discoveries about the universe and its distant galaxies. Their findings were published in the journal Nature. The researchers studied the redshift of specific galaxies to determine their distance from Earth. They focused on Maisie’s Galaxy, which was believed to have a redshift of z ≈ 11.5, and a nearby galaxy that was thought to have a redshift of z ≈ 16, the highest ever found. Further analysis revealed that Maisie’s Galaxy did have a high redshift, confirming their initial belief. However, the other galaxy was found to have a redshift of z ≈ 4.9, not z ≈ 16 as previously thought. The JWST data not only discovered these galaxies, but also confirmed and characterized their redshifts. This demonstrates the power of the telescope in finding and studying the early universe. The research was made possible through collaboration between the CEERS team and the team in Scotland. The successful partnership allowed for follow-up spectroscopy and efficient analysis of the data. These discoveries show the success of the JWST in its mission to explore the early universe and provide valuable insights about galaxies in that period.
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