Hello, I'm new here, and I really don't know much about astrophysics so would appreciate it if your replies were as simple as possible I've read that scientists are hopeful to find life on Titan, Saturn's largest moon, because the planet resembles Earth in its earlier stages. I have a few questions about that: 1) Theoretically, how long would it take Titan to develop to Earth's level? 2) If it does develop this much, what would it be like? 3) What are some of your theories on this topic in general? On a not so related note: 4) Some of the planets are not able to support life because they are either too far away or too close to the sun. Given that the sun was the right distance from a planet, is there another one which would be able to support life form? 5) Is it possible that in the future technology advanced enough would be created for Earth's inhabitants to be able to adapt to other planets? Please be as elaborate as possible Thanks for everything in advance!