[geerlingguy]

I agree; the movie is more of a relationship/self-reflection/friendship story, with some pop science and space stuff mixed in to keep it interesting.

The book is more of a true sci-fi novel, with the relationship stuff keeping it interesting.

I liked both a lot, and think both could be enjoyed fully with or without the other, in either order.

[estebank]

I found that I would have enjoyed the movie a bit more if I hadn't read the book, but it was still a solid 8/10. I'm really glad that a movie like this did well in opening weekend.