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However, Congressional spending limits under House Resolution 20 passed on January 31, 2007 by the U.S. To allow smaller bodies to be detected, NASA was studying a project called the Terrestrial Planet Finder (TPF), a two- telescope concept slated to begin launching around 2014. The sensitivity of current detection methods makes it difficult for scientists to search for terrestrial planets smaller than this. The most Earth-like exoplanets yet found, Gliese 667 Cc and Gliese 581g (disputed), have masses larger than Earth's and orbit red dwarf stars in the habitable zone. This region is called the habitable zone. It is currently believed that for this to happen a planet must orbit in a relatively narrow band around its parent star, where temperatures are suitable for water to exist as a liquid. Discoveries regarding extrasolar planets were first published in 1989 raising the prospect of whether life (as we know it or imagine it) could be supported on other planets.
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Series concept and scientific basis Īt the start of the documentary, the presenter and team of scientists draw attention to their reasons for speculating about life on extrasolar planets. The "Aurelia" and "Blue Moon" concepts seen in the series were also featured in the touring exhibition The Science of Aliens. The scientific team of the series used a combination of accretion theory, climatology, and xenobiology to imagine the most likely locations for extraterrestrial life and most probable evolutionary path such life would take. For the purposes of the documentary, the team of scientists divides two hypothetical examples of realistic worlds on which extraterrestrial life could evolve: A tidally locked planet (dubbed "Aurelia") orbiting a red dwarf star and a large moon (dubbed "Blue Moon") orbiting a gas giant in a binary star system.
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The documentary is based on speculative collaboration of a group of American and British scientists, who were collectively commissioned by National Geographic. The program focuses on the hypothetical and scientifically feasible evolution of alien life on extrasolar planets, providing model examples of two different fictional worlds, one in each of the series's two episodes. Turn your everday photos into fantastic visions with Alien Sky.Extraterrestrial (also Alien Worlds in the UK) is a British- American two-part television documentary miniseries, aired in 2005 in the UK by Channel 4, by the National Geographic Channel (as Extraterrestrial) in the US on Monday, and produced by Big Wave Productions Ltd. Space Objects such as Planets, Moons, and Galaxies "This is an amazing photography app! There isn't another one in its class when it comes to photo FX!!! It allows you to take your images and give them a true SciFi feel. "Fantastic app, create epic space images, just brilliant!" "Amazing app for creating cosmic creations and stellar sky scenes." There is simply nothing else like this in the app store. Alien Sky also includes a set of futuristic lens flares optimized for your space explorations.Īlien Sky gives you complete control over sky customization, allowing you create fantastic visions and otherworldly photos. With Alien Sky, you can customize your sky with an amazing collection of high resolution space objects. Reality is boring! Create fantastic and futuristic visions with Alien Sky. Create fantastic and futuristic visions with Alien Sky!