It's a book about an asteroid about to crash head-on with Earth and the Earthlings courageous attempt at deflecting it.

It's a largely descriptive book, and while still containing an appropriate amount of characterization, I find the writing quite bland and uninspired. There's a lot of potential for drama, but Clarke uses none of it.

So, what to say? It's a book. It has words in it. I applaud the many hours of research, but I'm sorry to say that I won't be recommending this book to anyone anytime soon. There are simply too many other books that are better, has more interesting premises or characters.

That's all. This particular edition features no grammatical or spelling errors.