Why is there a milky way?

Answer 1

In Astronomy, it is often not possible to answer the question "why".

The Milky Way is the name that ancient farmers used to describe the appearance of our galaxy; like a trail of spilled milk in the sky. They knew little about the stars, nothing about galaxies, and described what they saw.

Today we use the phrase "Milky Way" to describe our galaxy as seen from within; countless stars off in the direction of the galactic center, which we see all smudged together because there are so many, and so far away.

Answer 2

The Milky Way is a barred spiral galaxy where the Earth is located. It appears as a milky band across the sky due to the accumulation of billions of stars, dust, and gas in our galaxy. The name "Milky Way" comes from its hazy appearance, resembling spilled milk in the night sky.