We are travelling on spaceship earth with our fusion reactor, the sun, at 500,000 mph around the galaxy. If you wait about 1 billion years, you might have a short trip to one of the planets of the Andromeda galaxy

Actually it would be pretty boring. Do you really like rocks, craters, dust and ice so much that you would leave Earth and all it's natural wonders behind just to be confined to a hideous capsule so you can look at dust and craters? Think about it.

Sorry but there is no reason to believe that there is any major technology breakthroughs in the future. The fundamental sciences have reached a brick wall, so technology must soon follow. Think of the progress of early last century as an anomaly. From here on in we will have to learn to cope with the downside of technology.

Cheers!

Why the need to advance 100 years overnight? They could just advance 100 years over 100 years! Makes no difference to us, we won't live to see any of it either way.

I believe terraforming is possible, but wholly unfeasible at our level of technology.

The approach is either big or small. If you're going big then we're talking smashing comets into planets, building giant world engines to pump out a reconstituted atmosphere etc.

Personally I think small is the more likely route. This involves using robotics, creating self-replicating swarms of trillions of cluster bots which will essentially cover a world, extracting and processing the local chemistry into something useful to Humans. After which they'll build themselves into a big mountain range and shut down, leaving us with a virgin world to use. The process could take thousands of years to complete, but the benefit is the whole process could be begun by just a small unmanned craft loaded up with the initial batch of bots. I suppose you could potentially also use a genetically engineered life form the the same purpose.

Another option is rather than changing the world to suit us, it may be simpler and cleaner to change us to suit the world. Assuming our genetic and cybernetic technologies continue to develop apace, then there will come a point when we have the power to change, rearrange and redefine Human biology. Why not create lungs that process CO2 or skin that can handle extreme cold or low pressures? Seems quite horrifying to us now, but our future descendants may have no such qualms about rewriting their own genetics any more than we do picking out a new outfit to suit changing fashions. It won't happen soon, but perhaps there's a time when Humans could wander about on a planet like Mars in their shirtsleeves.