Why Milky Way is spiral

We live in a vast universe, it is made of crores of galaxies, one of the galaxy is our Milky Way

It is spiral in shape , do you know why it’s shape is spiral

Scientists are busy in finding the secrets of universe

It is founded that crores of stars and dust particles revolve in galaxy, that’s why it’s spiral in shape

According to nasa , Milky Way was discovered in 1773

The Milky Way is a huge collection of stars, dust and gas. It’s called a spiral galaxy because if you could view it from the top or bottom, it would look like a spinning pinwheel. The Sun is located on one of the spiral arms, about 25,000 light-years away from the center of the galaxy