What isn't fine is getting basic and fundamental concepts wrong like the ship slowing down in space that Revis did. Note that she also had a hand-wavey power source in said spaceship and THAT is fine. But thinking there's friction in space? No. It's a popular book for teens and it's actively confounding a concept that's actually quite difficult to teach. Pretty much no one (and certainly no teen) has been in space and so books and movies are all most of us have to base our intuition on when it comes to how stuff in space works. For things on Earth, it's easy to think about our everyday experiences and predict (from a basic physics point of view) what will happen. On Earth, stuff DOES gradually slow down. In space it doesn't and that's a concept that some kids, when learning physics for the first time, find difficult to grasp. It's a disservice to further confuse the issue.
And for the record, usually if an author tries to do their research, it's obvious in the writing.
FAQ on her website. One of the questions and responses is:
Q: WAIT A MINUTE. I think I found a scientific error in Across the Universe.I can only assume the "REALLY BIG" scientific error is the friction in space thing that's made me so angry. I'm not 100% convinced that it and associated sciencefails are properly addressed. I can think of one scenario that would make it "the characters are wrong but the science isn't", and from the plot of book one and the hints I've seen around the web for the events in books two and three, it doesn't seem likely.
A: Well–there’s a chance I messed up. BUT if you’re one of the ones who noticed the REALLY BIG scientific error…well, I’ll just say that there IS a sequel, and it DOES address this, and maybe it’s not that the book is wrong, but that the characters have the wrong idea…
Have any of my readers actually read the second book? Is it worth my time (and money) reading it just so I can blog about the problems in it? So far the answer to the second question has been "no" and picking up the second book in a shop and flicking through it didn't exactly fill be with the desire to jump back into that world.