where is a spiral arm located
Our galaxy is about 100,000 light-years wide. Weâre about 25,000 light-years from the center of the galaxy. It turns out weâre not located in one of the Milky Wayâs two primary spiral arms. Instead, weâre located in a minor arm of the galaxy. Our local spiral arm is sometimes Orion Arm, or sometimes the Orion Spur.Itâs between the Sagittarius and Perseus Arms of the Milky Way. The image below shows it. Our sun is located the Orion Arm, or Orion Spur, of the Milky Way galaxy.Itâs a minor spiral arm, located between two other arms. Image updated in 2010 by R. Hurt on Wikimedia Commons. Our local Orion Arm of the Milky Way is some 3,500 light years across.Itâs approximately 10,000 light years in length. Our sun, the Earth, and all the other planets in our solar system reside within this Orion Arm. Weâre located close to the inner rim of this spiral arm, about halfway along its length.ur local Orion Arm of the Milky Way is some 3,500 light years across. Itâs approximately 10,000 light years in length. Our sun, the Earth, and all the other planets in our solar system reside within this Orion Arm. Weâre located close to the inner rim of this spiral arm, about halfway along its length.