Past, Present and Future.

For the last few days i have been thinking a lot about the future. Not so much the future in my lifetime, but what's ahead of mankind let's say... 500 years from now. When looking back 500 years ago, technology has been making leaps. We are now able to fly from continent to continent. We've had spaceflight as well.
Seeing how far we advances on technology alone, i wonder what's in store for us over the next 500 years. Will we have flying cars, go visit other planets or star systems. Have we found extraterrestial life? Or did we all cease to exist due to Nuclear wars?

Secretly i wish i had a time machine, just to see for a day or so what the future would hold for humans.