Where to begin? As far as style goes, this story flows very well. You misspelled a few words, but I'm not going into that.

The story is good, but the actual crossover of Middle Earth and sci-fi brought it down. Way down. Also, your characterization of the elves is completely too "human". They're beings of perfection and should be portrayed that way.

Now, if you would take the initiative to create your own plot and characters, this would be excellent. In terms of Fanfiction, however, this just didn't work.

This story looked dangerously close to a Mary Sue, plus I didn't find the whole concept that interesting. (Apparently, and fortunately for you as the writer, you seem to love your own work without a doubt). It's interesting that you would leave reviews to other people complaining about things not adding up, while you go out of your way to bring the Elves into a science-fiction theme story.

Well, I haven't really anything negative to say. I thought your story was immensely creative, and even though I am a devout Lord of the Rings fan, I didn't mind the licsense you took with the whole science fiction spin you put on the story. I actually think your fan fic would be interesting as a short film.
I guess the only criticism I can offer is that in some places, I had trouble determining who was speaking. Other than that, some of the science fiction jargon went over my head, but it sounded very convincing.
I liked the tone and relaxed yet smooth-flowing pace of the story. I liked the touch of humor at the end, as well.
Vastly better than anything I have yet read on the site! I would be interested in reading more if you ever expanded on this story.

Hmm, interesting. I never thought anyone would try putting LOTR characters in a science fiction setting. Sadly, most of these types of AUs don't exactly work out too well. Thankfully, this one does. The flow of the story moves smoothly enough, but it's kinda vague as to where the story's going. Is it another version of the ending where a few members of the fellowship go to the undying lands in spaceships? It's a minor thing, so nothing to worry about. Then there's the OC of this story, which I'm guessing has a major role to play in this story. I'm still not sure what to make of this Voronve character just yet. So, I'll save judgment until later. All and all, a start that can pique the interest.

The idea of Elves returning to Fourth Age Earth is intriguing, and Voronwe would return if anyone would, as return seems to be his destiny. I am also interested in finding out whether, despite Tolkien's well-known anti-machine sentiments, Voronve and family would be succesful in teaching humans to rule over technology. Perhaps he has been seduced by his own pride into trying to do the impossible, which will lead to disaster. In that case, Oh, poor Earth! and Poor Universe if the humans get loose!
The exposition could have been a lot tighter. You really enjoy writing the operations of the ship, but to make readers follow them with as much interest as you put into the writing, it would be better to first establish a strong point of view first. Once readers identify with a character, the character's work becomes interesting. (I found this out long ago reading Moby Dick.)
To both establish a strong point of view early and ground the story in LoTR, I would have started with Voronve's visit to Gandalf and Frodo, or included a much longer interaction with Galadriel. Immediately before or after the relevant conversation, Voronve could express to himself some of his regrets about abandoning the humans to their fate. This would establish quickly what his challenge will be, which helps define the character and involve the reader in caring and guessing whether he will succeed.
As happens all the time in fanfic, you would benefit from a spell-checker.
If you go on with this story, I will be interested to see how it develops.

Not bad, not bad at all. Let's see... oxygen is spelled wrong, the part about falling to the sword of an enemy is spelled "swort." Philosophically is spelled wrong as well.
Content-wise... well, I get the general idea, but the characters just went over my head. Are they OCs? That means "original characters" by the way. I wouldn't know. But the story flows well and is pretty clear. The technology stuff I skimmed through, the stuff about the engines made almost no sense. A lot of authors do it on purpose, so that's alright.
Ah, well, whatever. It's a good story. Be sure to write chapter two.