enlightening — giving you new information about something in a way that increases your understanding of it

an enthusiastic museum guide points to a massive dinosaur skeleton while explaining fascinating details to a group of visitors. She gestures animatedly at different bones while sharing amazing facts about how these creatures lived millions of years ago. The visitors' faces transform from casual interest to wide-eyed wonder as they learn surprising new information. Children and adults alike lean forward with growing excitement, their expressions showing genuine amazement at each revelation. A young boy's mouth drops open as he discovers how enormous these ancient creatures really were. people gaining new information that increases their understanding of the prehistoric world