One billion to two billion years in the future, the increase in solar radiation caused by the helium build-up at the core of the Sun will result in the loss of the oceans and the cessation of continental drift. Four billion years from now, the increase in the Earth's surface temperature will cause a bad greenhouse effect. By that point, most if not all the life on the Earth will be gone. The most likely fate of the planet is being destroyed 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.