I’m most of the way through Project Hail Mary by Andy Weir. Same guy that wrote The Martian (the book that got very faithfully adapted into a movie with Matt Damon) and this book is jam-packed with just as much real-world science.

If you’ve never read (or seen) The Martian, here’s the basic premise: the year is 2040-something and NASA has started manned missions to Mars. Our hero Mark Watney is one of six crew aboard Ares 5, which is planned to spend 30 sols (Martian days – 37 minutes longer than an Earth day) on the planet and do research. On Sol 6 of those 30, there’s a massive dust storm with winds strong enough that they threaten to make the rocket for the return journey tip over, leaving them stranded on Mars, if they don’t abort now. Just one problem: Mark is nowhere to be seen. The dust storm is too thick to see through, and the last thing his team saw just before his radio went dead was all his vital signs drop to zero. The captain searches for him for as long as she can, but eventually she’s forced to call it off and return home with only five of the six crew.

Eight hours later, Mark wakes up, says “ow, my everything”, figures out that the main communications antenna that the storm ripped off the HAB (astronaut house), punctured his suit, and grazed his side poked a hole straight through his suit’s bio monitor as it did so (hence why his team saw his vitals drop), looks over at the empty launch pad, and realizes he is now the only human on Mars and the first one to be stranded there. The rest of the book is him using every scientific trick in the book to keep himself alive until he can reach the Ares 6 landing site where there’s another rocket set up. As a not-too-spoilery example, Thanksgiving was going to happen while the team was there, so NASA sent them with whole, uncooked potatoes among other things with which to prepare a Thanksgiving feast. He combines Martian dirt with some natural fertilizer (read: his own poop) to make fertile soil, and gets water by recombining hydrazine (leftover rocket fuel the return rocket didn’t need) with oxygen in a rather terrifying method that involves small amounts of fire, then covers the floor of the HAB in soil and plants the potatoes. It’s a very cool book. My one gripe with it is that the protagonist is a bit of a jerk. He’s very full of himself and he swears a lot.

The protagonist of Andy Weir’s next book, Project Hail Mary, is neither of those things. He wakes up, amnesiac, on board a spacecraft, and quicklu discovers that its other two crewmembers did not survive the medically induced coma they were placed in for the journey. He has a flashback and remembers why he is here: some extraterrestrial bacterium-esque life form dubbed “astrophage” that feeds off of stars has started feeding off the Sun, and at the rate it’s getting dimmer, within 20 years the Earth will get cold enough that humans are looking at extinction. Additional astronomy revealed all the stars in our stellar neighborhood were infected with astrophage, and all but one were getting dimmer. Project Hail Mary, the spacecraft he’s on, is (as the name implies) humanity’s last-ditch effort to save themselves: take three of their best astronauts, yeet them at that star, and pray they find out why it’s not getting dimmer and report back to Earth in time to save the human race. I don’t want to spoil this book too much, because it’s super good, but they go super in depth about the alien life form (which it turns out is DNA-based and uses truly staggering amounts of infrared light to propel itself between the Earth and Venus, whose carbon dioxide filled atmosphere is necessary for it to breed, and stores the solar energy it collects by directly converting it to mass (E=mc²) in the form of neutrinos).

There’s also a huge surprise waiting for him at his destination star which I flatly refuse to spoil. You’re just going to have to read it for yourself, although I can practically guarantee you’ll be just as excited as I was.