It's not purely impossible but it's highly unlikely, plus you should consider our political and economical stability, and the chance that we will communicate with extraterrestrial planets are highly unlikely unless if something miraculous scientific method found, We won't last million years for sure, the earths atmosphere will be very high making impossible to humans to live tho if we can adapt it's not impossible . Our future is not predictable, we may civilize mars or some planet, we may found time traveling, the earth will be better in next hundred years but "million?" It's long year. and it's smart of you to ask those question on non religious angle.