I read "Project Hail Mary", the third book by Andy Weir, who wrote "The Martian", earlier this summer, and re-read a bit of it at the end of our camping trip (after I finished "Auntie Mame" and "Around the World with Auntie Mame", both of which had been in my bookcase for years). It's very good; Weir's second book, "Artemis" was a bit flat, but I loved this new one as much, possibly more, than "The Martian" - and that's a high bar.