Project Hail Mary by Andy Weir
The latest book by the author of 'The Martian'. I wasn't too thrilled with 'Artemis'; it was ok, but no 'Martian'. This one, maybe still not a 'Martian', but a really fun read. A two-sitting read (I started late and had to sleep). A lot of the dry humor (and a few LOL's), and a bunch of 'science the (crap) out of it'. Reminds me a lot of Hal Clement novels.
I just finished this one too. Not “The Martian”, but a solidly entertaining book. I appreciate the ‘science the (crap) out of it‘ approach too. Not a lot of hand waving SciFi tropes that blatantly violate physics. His books are always rather well put together too, meaning few if any glaring plot holes or contradictions that pull you out of the story. Only once did I say “wait a minute, how did...”, and that one was easy to chalk up to unexplained rather than impossible/contradictory. I also had one quibble with the science too...Xenon will make bonds. XeF2 is a thing, it is a weird thing, but it is real and I have used it.