How Long Will The Earth be Livable

 Even if by any chance our beloved earth is saved from us - the human destructors - it is not going to be there for ever. Everything has its end. Earth too is going to face its end. But if we don't destroy it then it will have a long long life - which is a rare possibility, of course. Cause, at the current rate of resource misuse - it will die much earlier!

The future of the Earth will be determined by a variety of factors including increases in the luminosity of the sun, loss of heat energy from the earth's core, perturbations by the other bodies in the solar system and the biochemistry of the earth's surface. The planet will continue to undergo glaciations cycles because of eccentricity, axial tilt and precession of the earth's orbit.

As part of the ongoing super continent cycle, plate tectonics will probably result in a super continent in 250 to 350 million years .Some time in the next 1.5 to 4.5 billion years the axial tilt of the earth may begin to undergo chaotic variations, with changes in the axial tilt of up to 90o. 

1 to 2 billion years in the future, the steady increase in solar radiation caused by the helium build-up at the core of the sun will result in the loss of the oceans. Four billion years from now, the increase in the earth's surface temperature will cause a runaway greenhouse effect. By that point, most if not all the life on the surface will be extinct.The most ultimate fate of the planet is absorption by the sun in about 7.5 billion years, after the star has entered the red giant phase and expanded to cross the planet's orbit. THAT WILL BE THE END OF OUR BELOVED EARTH.