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Sioux Falls Scientists endorse Alien Planet for giving us some ideas what
alien life on other planets might be like, but it's highly speculative.

Alien Planet

Alien Planet (2005) - 94 minutes
Alien Planet at Amazon.com

Travel 6.5 light-years to see what science predicts is really out there.

What if there really was life on another planet? What could we expect to find? And how would it differ from Earth? These questions and many more are answered in Alien Planet, a spectacular voyage to a world beyond the stars. Join world-renowned scientist Stephen Hawking, Craig Venter and others as they speculate on what life forms might exist on Darwin IV, an imaginary planet 6.5 light-years from Earth. Combining breathtaking state-of-the-art computer animation and startling photo-realistic visual effects, Alien Planet is an explosive virtual excursion to a world populated by bizarre beasts and exotic vegetation, where reality and fantasy collide in a thought-provoking exploration of "what if?"

4-20-16 Humans have pondered aliens since medieval times
Humans have pondered aliens since medieval times
Wonder about civilizations on other worlds goes back centuries. So far, real aliens from other worlds have refused to show their faces on the real-world Earth — or even telephone, text or tweet. As the Italian physicist Enrico Fermi so quotably inquired during a discussion about aliens more than six decades ago, “Where is everybody?” Scientific inquiry into the existence of extraterrestrial intelligence still often begins by pondering Fermi’s paradox: The universe is vast and old, so advanced civilizations should have matured enough by now to send emissaries to Earth. Yet none have. Fermi suspected that it wasn’t feasible or that aliens didn’t think visiting Earth was worth the trouble. Others concluded that they simply don’t exist. Recent investigations indicate that harsh environments may snuff out nascent life long before it evolves the intelligence necessary for sending messages or traveling through space. (Webmaster's comment: The Milky Way is 12 Billion years old and an advanced civilization with interstellar travel would populate the Milky Way in less than 4 Million years (simple population mathematics). Giving 4 Billion years for intelligent life to first develop which leaves 8 Billion years for civilizations to spread, that's 2,000 times the time needed. Where are they indeed?)

4-19-16 New telescopes will search for signs of life on distant planets
New telescopes will search for signs of life on distant planets
Atmosphere of a world in another solar system might reveal hints of alien biological activity. A suite of current and future telescopes (Spitzer, TESS, Hubble, James Webb and WFIRST-AFTA) could identify remote habitable worlds and peer into the newfound atmospheres for hints of alien biology. Our galaxy is teeming with planets. Over the last 25 years, astronomers have cataloged about 2,000 worlds in 1,300 systems scattered around our stellar neighborhood. While most of these exoplanets look nothing like Earth (and in some cases, like nothing that orbits our sun), the bonanza of alien worlds implies a tantalizing possibility: There is a lot of real estate out there suitable for life. On Earth, life alters the atmosphere. If plants and critters weren’t around to keep churning out oxygen and methane, those gases would quickly vanish. Water, carbon dioxide, methane, oxygen and ozone are examples of “biosignatures,” key markers of a planet crawling with life as we know it. Setting aside questions about how recognizable alien life might be, detecting biosignatures in the atmosphere of an exoplanet would give astronomers the first strong clue that we are not alone.

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Alien Planet

Sioux Falls Scientists endorse Alien Planet for giving us some ideas what
alien life on other planets might be like, but it's highly speculative.