I have just finished reading this wonderful book on astrobiology. It's not a long read, but some of the language is a little technical and it requires at least some background and understanding of general biochemistry terminology. But overall, if you're looking for a clear introductory book for learning more about astrobiology, I would highly recommend Systems Approach To Astrobiology.
The first chapter goes through general understanding of what astrobiology is, including what it aims to achieve and what type of scientific field it is. Chapter one also goes through what a system is, and its composition and characteristics. What this book does well is emphasizing the importance of systems analysis and analyzing data through the context of an entire system rather than in isolation. This is very crucial in astrobiology and systems chemistry, because so many subsets and subsystems depend on each other and are highly affected by each other.
Chapter 4 goes into depth on analyzing the different definitions of a living system and when a system can count as living. This can of course become very unclear as there are many complex steps in the transition from abiotic chemistry to the first protocell. The chapter also goes into the uniqueness of living systems, subsystems of metabolism, ATP, alternative primordial energy currencies other than ATP, and more.
Chapters 5 & 6 are about systems chemistry and prebiotic chemistry. Chapter 5 covers molecular networks, self-replicators, and emerging features as prebiotic evolutionary transitions. Chapter 6 discusses prebiotic chemical feasibility, molecules found in space from meteorites and other sources, differences between modern enzymes and prebiotic reactions, and also goes through some learning phases experienced by origin of life researchers throughout the years and where the field is now. Chapters 7-10 go through all of this through a systems standpoint, and weigh these prebiotic chemistry problems against other factors within a gigantic system with different feedback loops, intricate chemical complexity, etc.
Chapter 11 is focused on panspermia and the interplanetary transport of life. Chapter 12 is a general overview of systems analysis.
I just finished the book today and recommend it to all of you interested in planetary science, astrobiology, origin of life, molecular evolution, etc. Enjoy!
