This image shows the two galaxies interacting. NGC 2936, once a standard spiral galaxy, and NGC 2937, a smaller elliptical, bear a striking resemblance to a penguin guarding its egg. This image is a combination of visible and infrared light, created from data gathered by the NASA/ESA Hubble S.T.
Time machine: detailed near-infrared images of galaxies that existed when the universe was only 900 million years old. The images were taken by the JWST as part of a study of reionization in the early universe. Courtesy: NASA, ESA, CSA
What about it?
Reionization is the process by which neutral hydrogen atoms are ionized, making the universe transparent to light at wavelengths that would have been absorbed by the atoms.