Could have been great but is mediocre

Rating: 4/10 (18 August 2015)

The good: Some special effects are pretty cool. The basic idea of the story is pretty cool.
The bad: Everything else. The acting is bad, there is nothing approaching real science and it is obvious that the writers didn't know how to flesh out the plot. The plot raises a lot of questions but never answers them and you are not left wanting more, but instead you wish you would have not wasted your time watching the movie.
The movie starts with a humanoid looking life form on the surface of a planet, which turns out to be Earth long ago. For some reason this humanoid drinks this liquid and it kills him. Why? We don't know and never find out.
Scientists find evidence that the origin of man comes from another galaxy. After some investigating, a crew concludes that they need to go into deep space to find the origin of man on a distant rock. They go to this rock and find some ancient humans in a deep sleep; only one is alive. They awaken it and it attacks them. Why? We don't know. What is it doing there? We don't know. Why were one of these creatures on Earth as seen in the beginning of the movie? We don't know that either.
The crew finds this infected slop and some kind of snake looking creature on the distant rock. What is it? We don't really know. How did it get there? We don't know that either.
In a telltale sign of bad writing, one of the answers is given, not through plot development but through dialogue from one of the actors.So instead of writing a good script so that the audience can get involved, we are just given an answer through dialogue because the writing is terrible.
After a bunch of crew members die, the movie ends with only one crew member remaining, flying off into space to find the origin of man. Plus, there is a mutant organism that is born, which looks like an "Alien" from one of the original "Aliens".
If this movie had come out first, the Alien franchise would have been dead long ago.