Why do most extrasolar planets discovered by the Doppler method have orbits relatively close to their host stars?
A) They transit more frequently and have thus been more likely to be detected in the short time we have been searching for them.
B) More of the starlight is blocked by the planet when it transits the star.
C) These close-in planets are easier to detect because they cause larger Doppler shifts.
D) The closer to a star, the hotter and therefore brighter the planet is.
E) Planets that are close to a star are heated up and therefore larger.
C) These close-in planets are easier to detect because they cause larger Doppler shifts.
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