 One of the largest programs in Webb's first year of science was the Advanced Deep-Extragalactic Survey. The object of the study is to learn how the earliest galaxies assembled themselves and how fast they formed stars. This web image shows a portion of an area of the sky known as Good South. Over 45,000 galaxies are visible in this image. Before Webb, there were only a few dozen galaxies observed above a redshift of eight, when the universe was less than 650 million years old. Webb has identified more than 700 candidate galaxies that existed before that. This was far beyond predictions from observations made before Webb's launch. A team named the Cosmic Evolution Early Release Science Survey, Sears for short, produced this image. It includes over 100,000 galaxies. Spectroscopy has identified three of the oldest ones. Here we see that three lines appear in the same order for all three galaxies. One hydrogen line followed by two ionized oxygen lines in each spectrum. The further to the right this pattern falls, the older the light source. Sears III emitted its light 13.2 billion years ago. Sears 24 and Sears 23 emitted their light 13.3 billion years ago.