Extraterestrial Sources of earthquake are as follows.
Meteorite between planets are accelerated by dark matter. Approaching planets might induce earthquake on earth. Surface gravity of Earth is relativly large compared with big planet, that is, termainal velocity of meteorite on earth might be relatively high and Earthquakes instead of small craters might happen.
Serial configuration of planets have been considered as catestropic. Gravitational jet of inner planet might accelerate meoteorite inbetween which make earthquake.
As earth cools down, pressure make eruption of volcano which is the syndrom of start of cold era.