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Which sciences are combined in astrobiology?
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extraterrestrial life
An illustration of the Earth-size planet TOI 700e orbiting within the habitable zone of its star. The habitable zone is the area around a star where liquid water, and thus possibly life, can survive on a planet's surface. Its Earth-size sibling, TOI 700d, can be seen in the distance.
Astrobiology is a multidisciplinary field that investigates the nature, existence, and search for extraterrestrial life. To address these complex questions, the field integrates three primary scientific disciplines:
- Biology: Used to understand the requirements for life, the potential for life to arise under diverse conditions, and the study of extremophiles on Earth as models for life elsewhere.1
- Astronomy: Employed to identify habitable worlds, study extrasolar planets, and conduct searches for extraterrestrial intelligence (SETI).1
- Geology: Utilized to analyze the environmental and planetary conditionsāsuch as the presence of liquid water or subsurface aquifersāthat could support life on other worlds.1
By combining these sciences, researchers can better define "habitable zones" and evaluate the potential for life beyond Earth.1