In the Doppler method for detecting extra-solar planets, we measure: A. The moti

Question

In the Doppler method for detecting extra-solar planets, we measure: A. The motion of the planet by measuring the changes in velocity of the planet over time B. The motion of the star by measuring the changes in velocity of the star over time C. The change in brightness of the star overtime D. The light coming from the planet by blocking out the star’s light In the Doppler method for detecting extra-solar planets, we measure: A. The motion of the planet by measuring the changes in velocity of the planet over time B. The motion of the star by measuring the changes in velocity of the star over time C. The change in brightness of the star overtime D. The light coming from the planet by blocking out the star’s light A. The motion of the planet by measuring the changes in velocity of the planet over time B. The motion of the star by measuring the changes in velocity of the star over time C. The change in brightness of the star overtime D. The light coming from the planet by blocking out the star’s light

Explanation / Answer

Option B is correct

As it is the method in which for detecting the extrasolar planets the motion of it's parent star is measured by messaging the change in velocity of the street overtime.

This it is an indirect method for finding extrasolar planets from radial-velocity measurements via observation of Doppler shifts in the spectrum of the planet's parent star.

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