In other words, the same reason we see different stars at night depending on the time of year.nmsurobert said:I just answered my own question. I've been trying to relate it to the Earth's tilt but it has to do with our position around the sun. duh.
The Milky Way is a spiral galaxy that consists of a central bulge and four major spiral arms - the Scutum-Centaurus arm, the Sagittarius arm, the Perseus arm, and the Outer arm.
Our position in the Milky Way, specifically our location within the spiral arms, affects our view of the galaxy. When we are located within a spiral arm, we have a direct view of the stars and gas clouds in that arm. When we are located between arms, our view is obstructed by dust and gas clouds, making it more difficult to observe the structure and contents of the arms.
The Earth is located in the Orion Arm, a minor spiral arm located between the Sagittarius arm and the Perseus arm. It is estimated that we are about 25,000 light years away from the center of the galaxy, and our solar system is situated about two-thirds of the way from the center of the galaxy to the outer edge.
Scientists use various methods to determine the position of the Earth within the Milky Way, including measurements of our distance from the galactic center, our motion relative to other stars and gas clouds, and our location within the spiral arms based on observations of other objects in the galaxy.
Scientists are continuously studying the Milky Way and its structure, including the spiral arms and the Earth's position within them. Ongoing research includes mapping the distribution of stars and gas in the spiral arms, studying the effects of the spiral structure on the formation and evolution of the galaxy, and investigating the role of dark matter in shaping the structure of the Milky Way.