Which major spiral arm is situated further out from the galactic center than the Local Arm?
Answer
Perseus Arm
The structure of the Milky Way includes major arms defined by density waves circling the galactic core. The Solar System, residing in the Local Arm (Orion Spur), is positioned in the space geographically between two large arms. The Sagittarius Arm is identified as being closer to the galactic center. Consequently, the Perseus Arm occupies the position further away from the galactic center relative to the Local Arm. Therefore, the Perseus Arm is the major structure located outside the position of the Orion Spur, whereas the Sagittarius Arm lies inward.
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