Which of the following methods uses the principle of orbital acceleration to detect planets around another star?
A)measuring change in the Doppler shifts of a star over the course of many nights
B)measuring a single Doppler shift of a star, one time
C)measuring the change of light of a star as the planet crosses in front of it
D)taking a picture of the planet next to the star

Question

Quizplus · Accepted Answer

Measuring change in the Doppler shifts of a star over the course of many nights uses the principle of orbital acceleration to detect planets around another star. As a planet orbits a star, it induces a gravitational tug on the star causing it to wobble back and forth. This motion causes subtle changes in the star's light, which can be detected through changes in the Doppler shift of its spectral lines. Over time, by measuring these velocity changes, the presence of a planet can be inferred.

Which of the Following Methods Uses the Principle of Orbital