How Did Ancient Civilizations Navigate the Ocean Without GPS?

Ancient sailors used stars, winds, and seashells to find their way across the ocean, just like you use your sense of direction to get from school to home.

At night, people in ancient civilizations looked up at the sky. They noticed that certain stars stayed in the same place, while others moved. The most famous one was the North Star, which helped them know where north was. It's like having a friendly streetlight in the sky that always points you in the right direction.

During the day, sailors watched the wind and waves. They knew which way the wind was blowing and how the water moved. If they noticed waves coming from one side, it told them where the shore might be, like how you know your mom is near when you smell her favorite perfume.

Some clever people even used seashells to help them travel. They filled shells with sand and carried them on their ships. When they reached a new place, they dropped the shells in the water so they could find their way back, like leaving a message in a bottle for themselves!