Humanity stands at the precipice of a new era, one defined by the aspiration to explore and inhabit realms beyond Earth. The success of long-duration space missions, from lunar bases to Martian colonies, hinges critically on our ability to establish sustainable life support systems. Among the most vital of these is the provision of a continuous and reliable food supply. Terrestrial agriculture, while remarkably advanced, faces unprecedented challenges when translated to the extraterrestrial environment. Factors such as microgravity, elevated radiation levels, altered atmospheric compositions, and limited resources demand a radical reimagining of how we cultivate crops. This book delves into the molecular underpinnings of plant adaptation to these novel conditions, focusing on the transcriptomic responses that reveal how plants perceive and react to the rigors of spaceflight. We explore the imperative of space agriculture, the unique biological gauntlet that the spaceflight environment presents, and the powerful analytical techniques—including Next-Generation Sequencing (NGS) and Weighted Gene Co-expression Network Analysis (WGCNA)—that allow us to decipher these complex responses. A central theme is the investigation of carbon metabolism, particularly starch biosynthesis, and how its regulation is perturbed by spaceflight, often leading to a conserved transcriptional signature across diverse plant species. By identifying key regulatory genes, such as starch synthases and stress-responsive transcription factors, we aim to pave the way for precision breeding and genetic engineering strategies. Our ultimate objective is to provide the scientific foundation necessary for developing 'super-crops'—plants engineered for resilience, optimized for yield, and capable of forming the backbone of bioregenerative life support systems, thus enabling humanity's enduring presence among the stars. This book is a call to action, a compilation of current knowledge, and a roadmap for the future of plant science in the grand endeavor of space exploration. The quest for human expansion beyond Earth presents one of the most profound challenges of our time: how to sustain life in environments radically different from our own. Central to this challenge is the provision of food, a fundamental requirement for survival and well-being. While early missions relied on pre-packaged supplies, the prospect of long-duration voyages to Mars and beyond necessitates the development of self-sufficient, bioregenerative life support systems. At the heart of these systems lies the humble plant, a miracle of biological engineering capable of converting sunlight, water, and carbon dioxide into sustenance and oxygen. This book embarks on a scientific journey to unravel the molecular intricacies of how plants respond to the unique stressors of the spaceflight environment. We aim to bridge the gap between fundamental plant biology and the applied science of space agriculture. By delving into transcriptomic data, utilizing powerful analytical tools like Weighted Gene Co-expression Network Analysis (WGCNA), and focusing on critical metabolic pathways such as starch biosynthesis, we seek to identify the key genetic and regulatory elements that govern plant adaptation. Our goal is not merely to understand plant stress responses in space but to translate this knowledge into actionable strategies for developing robust, high-yielding crops capable of thriving off-world.