These questions apply to planets and moons in our solar system and worlds further afield, planets orbiting other stars referred to as 'extrasolar planets' or 'exoplanets.' Astrobiologists may not actively search for life but rather for locations where life could exist. What signs could astronomers look for that indicate a planet or moon is currently inhabited by life or has been at some point in its history?.What clues would indicate a world is habitable?.Would the different characteristics of an alien world cause life to follow a radically different evolutionary path?.What shape would life take on another world?.What are the limits of these environments and what kind of "extremes" could life still exist in?.What kind of environment do living organisms need to survive?.Astrobiologists study the possibility of life beyond Earth, they may be experts in biology but could also be qualified in a wealth of other scientific fields such as astronomy and chemistry.Īccording to the University of Washington, some of the questions astrobiologists are beginning to address regarding life elsewhere in the universe include:
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