JWST unlocks 10-billion-year mystery of how galaxies shape themselves

Using the James Webb Space Telescope, scientists spotted thin and thick disks in galaxies as far back as 10 billion years ago—something never seen before. These observations reveal that galaxies first formed thick, chaotic disks, and only later developed the calm, thin disks seen in modern spirals like the Milky Way.

source https://www.sciencedaily.com/releases/2025/06/250629033347.htm