Astrobiology is the scientific study of the origin, evolution, distribution, and future of life in the universe. The study of astrobiology brings together researchers from historically separate fields such as microbiology, ecology, astronomy, geology, paleontology, and chemistry and encourages them to work together to answer the most fundamental questions science can pose: What is life? How did we get here? Are we alone in the universe? This content is for formal and informal educators, as well as adults and students of all backgrounds. The material emphasizes biology in the early sections and space exploration in the later sections.