Our Sun takes about 210 million years to orbit the galaxy. About how long do disk stars orbiting twice as far away from the centre take to complete one orbit?

Question

Quizplus · Accepted Answer

Disk stars orbiting twice as far from the center of the galaxy as the Sun would take about twice as long to complete one orbit, due to the larger circumference of their orbit. Therefore, they would take approximately 420 million years.

Our Sun Takes About 210 Million Years to Orbit the Galaxy