- See also changes related to Astrobiology, or pages that link to Astrobiology or to this page or whose text .
- Astronomy : The study of objects and processes in the observable universe, e.g. stars, planets, comets or asteroids.
- Biology : The science of life — of complex, self-organizing, information-processing systems living in the past, present or future.
- Exobiology : The theoretical and experimental study of living systems outside our planet.
- Background radiation : Add brief definition or description
- Biochemistry : The chemistry of living things; a field of both biology and chemistry.
- Biophysics : The study of forces and energies in biological systems.
- Botany : The study of plants, algae and fungi (mycology).
- Cryptobiosis : A state of an organism in which metabolism is virtually arrested.
- DNA damage : Add brief definition or description
- DNA repair : Add brief definition or description
- Electromagnetic spectrum : The range of electromagnetic waves covering all frequencies and wavelengths.
- Extremophile : Organism living, or at least surviving, under biologically extreme conditions.
- Life : Living systems, of which biologists seek the commonalities distinguishing them from nonliving systems.
- Mars (planet) : The fourth planet from the Sun in our solar system; named after the Roman god of war; also known as the "Red Planet".
- : An inhabitant of the planet Mars — hypothetical as long as no definite signs of life have been found there.
- Organic chemistry : The scientific study of the structure, properties, composition, reactions, and preparation (by synthesis or by other means) of chemical compounds of carbon and hydrogen, which may contain any number of other elements.
- Origin of life : How did self-replicating biochemistry and cells arise from the prebiotic world approximately four billion years ago? Aka abiogenesis.
- Radar : (acronym for "radio detection and ranging") A technique used for detecting and tracking targets, navigation, imagery, and special applications.
- Theoretical biology : The study of biological systems by theoretical means.