What is the approximate radial distance of the Local Arm from the galactic center?
Answer
About two-thirds of the way out from the galactic center
Precise measurements derived from mapping distant radio sources and observing stellar populations place the Solar System's location within the Local Arm at a specific distance relative to the galaxy's center. This location is quantified as being approximately two-thirds of the way out from the galactic center. If the Solar System were located in the Sagittarius Arm, it would necessarily be closer to the central bulge. Being two-thirds out places the Local Arm substantially further from the dense core region than the major inner arms.
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