Alien Life

  • What Does ET Look Like from 40 Light Years Away?
    The Terrestrial Planet Finder (TPF) mission will have the technology to look for signs of life in the light reflected or emitted by planets orbiting nearby stars. But nobody knows exactly what signals life would emit. Clues from studies of Earth's early atmosphere are guiding
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  • Anybody Out There? Part II
    Famed neurologist Oliver Sacks is the author of many books, including "The Man Who Mistook His Wife for a Hat" and "Uncle Tungsten". In this second of a two-part essay on astrobiology, Dr. Sacks muses on the possibility of life on other worlds.
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  • Anybody Out There? Part I
    Renowned neurologist Oliver Sacks is the author of many books, including "The Man Who Mistook His Wife for a Hat" and "Uncle Tungsten". In this first of a two-part essay on astrobiology, Dr. Sacks discusses his early fascination with the possibility of
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    Esperamos que alienígenas sejam muito mais espertos que nós. Não só eles possuirão a sabedoria de eras, mas viajarão a uma velocidade de empenamento, terão a habilidade de transformar (ou destruir) planetas inteiros e sua civilização se espalhará pelas galáxias.
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  • Aliens Depend on Time to Grow Brains
    To understand how intelligence develops, we have only one example to study: the development of human intelligence on Earth. Since intelligent life took a long time to develop on Earth, some believe it will take just as long on other worlds.
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  • Concerted Evolution
    The rapid advances in genetic sequencing have allowed comparisons previously unavailable to those scientists who try to understand how such a complicated structure as DNA might have evolved. But communicating an entire organism compactly in code may require a more ancient art: the music
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  • Homing Signals
    Phoning home intergalactically may have one natural prerequisite if a civilization is hoping to connect: timing their precursor signal or 'ring' so that we might know that they're broadcasting. Dr. Robin Corbet, of the Universities' Space Research Association discusses his research findings on Synchronized SETI.
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  • Complex Life Elsewhere in the Universe?
    The panelists ask whether the Earth's history provides us with examples of conditions that might be encountered on other planets.
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  • Interview with Ann Druyan and Steven Soter
    Ann Druyan, the widow of renowned scientist Carl Sagan, and astrophysicist Steven Soter collaborated with Sagan over many years to create the famed television series Cosmos and numerous other projects.
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  • The Meaning of Life
    Sitting beneath a dark night sky, looking up at the vast array of stars, what human has not wondered, "Are we alone?"
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  • The Search for Life in the Universe
    Neil deGrasse Tyson discusses the search for life in the Universe. Are we alone?
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  • SETI and the Search for Life
    Christopher F. Chyba of the SETI Institute discusses the search for life in the Universe. Are we alone?
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  • Are We Alone? Where are our Nearest Neighbors?
    Edward Weiler, NASA's Associate Administrator for Space Science discusses the search for life in the Universe. Are we alone?
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    Christopher F. Chyba do Instituto SETI discute a busca por vida no Universo. Estamos sozinhos?
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  • In Search of E.T.’s Breath
    Advanced space telescopes might soon probe far-off worlds for the chemical signatures of alien life. iron.html
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