I've also read some non-fiction this year. Breaking the Chains of Gravity by the wonderful You-tube v-loger Amy Shira Teitel (Vintage Space video shorts, mostly about NASA in the 1960s). This is about the history of getting into space *before* NASA is created, the book ending nearly on the page she describes the formation of NASA. Pre WWII work in the USA is mostly ignored in preference to the efforts in Germany which were much more important to the arc of history. She admits as much. I enjoyed it a lot, she's a good writer, so it called me back to keep reading, even late into the night on occasions. Unfortunately, it is marred by a handful of preposterous errors. One is the suggested speed of the X-15 being listed in the millions of miles per hour. Someone did a calculation and failed to do a 'does this remotely make sense' test to make sure a decimal place (or something) wasn't moved. Those errors can't help but make a serious reader wonder if other less obvious errors occurred. Also, I feel she dropped the ball a bit on the X-15. She spends a fair amount of pages discussing its development, but doesn't see it through to telling us anything about how it turns out. (My guess is that the development of X-15 is pre-NASA, but flight of it is all NASA). In sum, from the perspective of getting a good sense of what was happening in Germany prior to and during WWII, and how the US efforts in the 50s were affected by the importation of Germans, it is pretty good and I give it a strong positive recommendation.