<ul data-eligibleForWebStory="true">Galaxies started as thick discs before forming the thin discs we see now.Using JWST, scientists observed galaxies more than 10 billion years old.Thick discs serve as the foundation before thin discs give galaxies their shape.Scientists debate theories on disc formation, including 'born hot' and 'progressive thickening.'JWST findings reveal the intricate formation process of galaxies over billions of years.