What Weir does well in Project Hail Mary is how he makes science exciting. The books momentum in large part is driven by successive scientific discoveries which rescue the narrator from one crisis to the next. It also does great job of explaining aspects of the biological and physical world in both a thoughtful and accessible way.

I do have appreciation for scientific discovery and the scientific method, I didn't seem enough for me to really get as into the book as I could have. I found myself wanting, but for what I don't really know. There were a number of places as well that I was not able to fully suspend my disbelief. The science itself was sound, but the odds of everything that came to pass in the book ever happening felt like an impossibility. Though that most likely is asking too much of a novel with "hail mary" in the title.

Definitely would recommend though for anyone that enjoys science fiction. There is another element to the plot that was a lot of fun that I am not mentioning just to keep this spoiler free. I have not read The Martian myself, but after reading this it is clear that Wier is a quality science fiction author.