Aliases

Disambiguation

Extraterrestrial life is a scientific concept distinct from 'unidentified anomalous phenomena' (UAP) or UFO sightings. While UAP records may reference the possibility of extraterrestrial origin for observed phenomena, confirmed detection of extraterrestrial life has not occurred. This entry covers the scientific definition, not speculation about UAP origins.

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Concept

Life that originates from a world other than Earth, ranging from simple microorganisms to intelligent civilizations; a central subject of astrobiology and SETI research.

Vida que se origina de um mundo diferente da Terra, variando de microrganismos simples a civilizações inteligentes; um assunto central da astrobiologia e pesquisa SETI.

Enrichment

• Extraterrestrial life
  Wikipedia▎ high· 2026-05-14
  • Extraterrestrial life refers to life originating from worlds beyond Earth
  • No such life has been definitively detected
  • Range encompasses from microbes to intelligent civilizations
  • Fermi Paradox addresses the apparent contradiction between probability estimates and lack of confirmed contact
• Search for Extraterrestrial Intelligence (SETI)
  Wikipedia▎ high· 2026-05-14
  • SETI involves diverse scientific projects to detect extraterrestrial signals or evidence of intelligent life
  • Modern SETI began in 1959-1960 with Frank Drake's radio telescope experiments
  • Search focuses on radio and optical signals, technosignatures, and potential megastructures
  • No confirmed extraterrestrial intelligence detected despite decades of searching
• About Astrobiology
  NASA▎ high· 2026-05-14
  • Astrobiology studies origin, evolution, and distribution of life in the universe
  • Combines astronomy, biology, chemistry, geology, and oceanography
  • Key challenge is defining what constitutes life before identifying it elsewhere
  • Research includes Mars rover analysis, exoplanet habitability assessment, and origin-of-life experiments