What type of search technique has discovered the largest number of planets around the stars other than the Sun?
A) Looking for tiny variations in the star's position in the sky,caused by the gravitational pull of one or more planets orbiting the star.
B) Looking for tiny variations in the star's radial velocity,caused by the gravitational pull of one or more planets orbiting the star.
C) Looking for excess infrared radiation from the star,caused by the presence of planets that are cool and thus emit primarily in the infrared.
D) Using space-based telescopes to search for tiny pinpoints of light that follow circular or elliptical paths around the star.

Question

Quizplus · Accepted Answer

Looking for tiny variations in the star's radial velocity, caused by the gravitational pull of one or more planets orbiting the star, is known as the radial velocity method or Doppler spectroscopy. This technique has discovered the largest number of planets around stars other than the Sun. Radial velocity measurements can also yield information about the mass and orbital characteristics of the planets.

What Type of Search Technique Has Discovered the Largest Number