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¿Estamos solos en el Universo? ¿Estamos solos en el universo? La explicación de la paradoja de Fermi · Los problemas de Fermi · La visita de los extraterrestres	Astrobiología y filosofía filosofia, philosophy, astrobiologia, exobiologia
Astrobiology - NASA Science Since awarding its first exobiology grant in 1959, NASA has been engaged in astrobiology research. NASA’s Astrobiology Program investigates life in the Universe on many levels: how it began, how it evolved here on Earth, and where it might exist elsewhe	Astrobiology - Welcome to Astrobiology.com Astrobiology Web. Astrobiology.com is edited by Keith Cowing.
Astrochemistry: Where The Elements Come From - Astrobiology Chlorine and potassium, both odd-Z elements — possessing an odd number of protons — are essential to life and planet formation.
COSMIC ANCESTRY: Panspermia"s evidence and implications. The modern version of panspermia, Cosmic Ancestry treats all of evolution, not just the origin of life on Earth.
Defining Life, Explaining Emergence The strong version of Artificial Life claim that emergent computational patterns may not simply simulate life but realize the very phenomenon.
Earth First Origins Home - Rensselaer Polytechnic Institute The study of life"s origins on Earth is age-old, from ancient philosophers to contemporary scientists.
Find Life | The Planetary Society How The Planetary Society works to elevate the search for life as a space exploration priority.
Habitability and Biosignatures - Astrobiology The search for life beyond the solar system is a central goal in exoplanetary science.	How Extremophiles Work Extremophiles are organisms that live in "extreme" environments. Learn why extremophiles are remarkable, not only because of their habitats.
Life in the Universe (lecture by Stephen Hawking) This lecture is the intellectual property of Professor S.W.Hawking. You may not reproduce, edit, translate, distribute, publish or host this document in any way with out the permission of The Stephen Hawking Estate	Lively discussion of Hoover meteroite fossil claims SPIE Fellow Richard Hoover has provoked a media frenzy with his claim that ... Alien fossils found in meteorite? Scientists urge skepticism
NASA Astrobiology The official portal for NASA"s work in astrobiology, studying the origins, evolution, and distribution of life in the universe.	NISE Network - Astrobiología EXPLORANDO EL UNIVERSO: Imaginando la vida. Astrobiología La astrobiología es el estudio del origen, evolución, distribución y futuro de la vida en el universo.
Panspermia Panspermia proposes that organisms such as bacteria, complete with their DNA, could be transported by means such as comets through space to planets.	Sagan"s criteria for life revisited The Sagan Criteria for Life Revisited: Galileo"s 1990 close encounter with Earth framed one of the most difficult questions in astrobiology: Can a modern spacecraft tell if an alien world is a good candidate for harboring life?
Searching for Life Beyond Earth The search for life beyond Earth necessitates a rigorous and comprehensive examination of biosignatures, the types of observable imprints	Self-organization, on-line papers self-org-sys newsgroup for wider discussion.
The Encyclopedia of Astrobiology, Astronomy, and Spaceflight The Encyclopedia of Astrobiology, Astronomy, and Spaceflight