An observer located outside our Solar System, who monitors the velocity of our Sun over time, will find that the Sun's velocity varies by $\pm$ 12 m/s over a period of 12 years, due mainly to
A) Jupiter's gravitational pull.
B) Earth's gravitational pull.
C) variations in its brightness.
D) convection on the Sun's surface.
E) the sunspot cycle.

Question

Quizplus · Accepted Answer

Jupiter's gravitational pull causes the Sun to wobble slightly as it orbits the center of mass of the Solar System, leading to variations in the Sun's velocity.

An Observer Located Outside Our Solar System, Who Monitors the Velocity