Starspot periodicity and magnitude can be used to search for extrasolar planets

The fortnightly periodicity and other patterns of the seismic activities on the earth suggest that lunar and solar pulls are fundamental factors underlying earthquakes. The time lag in the decelerations of large mass relative to small mass after solar and lunar accelerations builds up strain which eventually results in earthquakes. Similarly, the sunspot cycle of about 11 years corresponds to the Jupiter's revolution to the perihelion.The butterfly phenomena of sunspot corroborate such a scenario.Therefore short sunspot cycles can be harnessed to search for earth-like planets.