Space Research

**Definition:** Studies of interactions between living organisms and characteristics of the extraterrestrial environment. These studies specifically address the structure and function of living organisms in an extraterrestrial environment and interdependent relationships of organisms with each other and/or the extraterrestrial environment while also touching on the origin, evolution and potential for extraterrestrial life. (From www.nasa.gov/audience/foreducators/spacelife/)

**Tree numbers:** - H01.770.644.966