Very interesting. I prefered the fourth chapter, when it starts to get into the heavy duty sci-fi stuff. It has some good opportunity for some serious splendid reading in the later chapters.

It's good to see that you decided to continue with this story. My suggestions for right now are to watch your use of "than" and "then" since they mean different things. Also, some more intricate character development is needed. The reader needs just a little bit more to identify with, especially at this point, where our hero and his people are striking out alone. Being alone is one of people's greatest fears, and is something that you should play upon, same with the aspects of being so different and getting lied to by a respected father figure. This story is overflowing with massive potential. I hope you keep working on it. I would love to see how the whole thing turns out.

This is pretty cool!
I like it!

Well, this sounds rather interesting. It has the good potential for becoming a novel, which would be wonderful. It would allow you to expand on things and flush out the characters and settings. Keep up the good work.