a cluster of thousands of galaxies of various shapes, sizes and colors NASA, ESA, CSA, and STScI NASA's Webb Telescope has produced the deepest and sharpest infrared image of the distant universe to date. Known as Webb's First Deep Field, this image of galaxy cluster SMACS 0723 shows thousands of galaxies – including the faintest objects ever observed in the infrared. This slice of the vast universe is approximately the size of a grain of sand held at arm's length by someone on the ground.