© Jeffrey J Wolynski

Earth is a black dwarf star in the last stages of stellar evolution according to GTSM. 

It is still cooling via volcanoes, geothermal vents and mostly liquid material escaping through the surface. This causes the crust to adjust and contract from thermodynamic contraction leading to what are called earthquakes and tsunamis. 

Many more millions of years in the future the magnetic field will die, and it will cease the ability to sustain life, similar to Mercury, Mars, Venus and Mercury, which are much older dead stars.