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Strange Signals from Outer Space

   2017    Science
For decades some have suspected that there might be others out there, intelligent beings capable of communicating with us, even visiting our world. It might sound like science fiction, but today scientists from across the globe are scouring the universe for signals from extraterrestrials. Horizon obtained exclusive access to film researchers at the Green Bank Telescope searching for radio signals from Tabby's Star, a star so mysterious that some scientists believe it might be surrounded by a Dyson Sphere, a vast energy collector built by advanced aliens.

Encyclopaedia Galactica

   1980    Science
Questions are raised about the search for intelligent life beyond the Earth, with UFOs and other close encounters refuted in favor of communications through SETI and radio telescope such as the Arecibo Observatory. The probability of technically advanced civilizations existing elsewhere in the Milky Way is interpreted using the Drake equation and a future hypothetical Encyclopedia Galactica is discussed as a repository of information about other worlds in the galaxy. The Cosmos Update notes that there have been fewer sightings of UFOs and more stories of abductions, while mentioning the META scanning the skies for signals.
Series: Cosmos

Evolution
Evolution

   2004    Science
Wings
Wings

      Nature
The Beauty of Maps
The Beauty of Maps

   2010    Art
Ancient Rome
Ancient Rome

   2006    History
Life
Life

   2009    Nature
Life in the Undergrowth
Life in the Undergrowth

   2005    Nature
Colour The Spectrum of Science
Colour The Spectrum of Science

   2015    Science
Earthflight
Earthflight

   2012    Nature