How do we know what our galaxy looks like and what methods are used to study its structure and appearance?

Scientists study the structure and appearance of our galaxy, the Milky Way, using various methods. One way is by observing the distribution and movement of stars, gas, and dust within the galaxy. They also use telescopes to capture images of the Milky Way from different perspectives. By analyzing this data, scientists can create models and simulations to understand the shape and structure of our galaxy.