So, there are still questions :
1. How did dinasaurs appear?
2. Light year is a measurement unit , it's not like 'years of months' we count.
2. Captain discussing there is no 'afterlife' and then again telling them, they'll "reincarnate" to guide these pesky humans
3. Hell and Heaven planet concept is rad. I mean 'planet'????
That concept of hell and heaven could've been put on this way.. dimensional.

The universe that we see from our limited ability to see at the sky is not really what we see. Just like dogs can't differentiate much colors, we can't differentiate dimensions and other vast array of color spectrum of the universe.

Naming hell and heaven just planets, narrows the whole concept of the creation.

This whole milky galaxy that we're in is changing it's course. We are heading towards ascension as some believe.
If this is a vast universe, and 'captain and his crew' has the technology, then they would be 'warping' through portals like wormholes which connects more than two different universes(just a theory). 

Everything in the universe is created through vibration.
A new word like 'substantiation' could be used to propose the idea of travelling rather than travelling this and that light year distance.

'Captain and the crew' descended to tell those monkeys that they created them, but they don't have the idea of who created them? 
again comes the 'dimension', plug this stuff in and the story would sound more non-pseudoscience

Overall, it's an interesting story. :D 
Super like it. :D