What bothered me the most is that the film doesn't respect the book. Some important passages are modified, others simply deleted while some other less important ones are present.

The pace is really slow, you fall asleep, you don't get the fun and appeal of the book.

Likewise, the relationship between Nicolas and Colin is quite far from the book and we don't really get attached to any character.

The casting is, however, quite good. Charismatic actors and pretty girls. However, we feel that they are not giving everything and could have better fit into their roles.

The book is difficult to understand, but this film even more so.

In short, not at all essential to see, even to see the universe in images since it does not represent the book at all.