This probably won't happen for another billion years or so. But when the change comes, it's going to happen fairly rapidly, the study from earlier this year sug

This probably won't happen for another billion years or so. But when the change comes, it's going to happen fairly rapidly, the study from earlier this year suggests. I would really hope that within a billion years we have managed to find other planets, built massive cities or worlds in space especially given the potential collision courses with other galaxies around 1.9 billion years and the expansion of the star we call the sun that will eventually engulf the earth evaporating all the water.