There are at least 3,000,000,000 stars in the galaxy and here is an idea of its size.it takes eight minutes for light from the sun to reach the earth for light fromthe middle of the galaxy to reach the sun,it takes about 27,000years
image: https://cdn.pixabay.com/photo/2017/05/08/08/35/star-field-2294797_960_720.jpg