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The NASA article you linked to is a good article, but brief. If you take the time to investigate further, you'll find that there is a list of nearby terrestrial exoplanets candidates, and one example, Gliese 667 Cc is one such planet. At a distance of 23.6 light years, it has been declared the most Earth-like object known outside of our solar system ( source ).

I don't know what aliens you've heard about, but the existence of Gliese 667 Cc nullifies the idea that there are no planets within 50 LY that have "any chance" of supporting a civilization capable of interstellar travel. It's obvious that there is at least some chance. At only half light speed the trip to Earth from there would take less than 50 years, well within our own lifespan. There may be even more planets with some chance of life within 50 LY. I suggest you avoid making absolutist claims in the future unless you enjoy being proven wrong.

Regarding my reference to the Roswell Incident. It was used as an illustrative example to respond to your question why alien craft might crash and your response doesn't address the reasons given in that example. If you want to debate whether or not the Roswell Incident is about an actual alien craft, I suggest that you take it up with a Roswell believer. I'm not one of them. I don't know with certainty what happened, and for that matter, neither do you.

<blockquote data-quote="Randall" data-source="post: 226663" data-attributes="member: 2682">The NASA article you linked to is a good article, but brief. If you take the time to investigate further, you&#039;ll find that there is a list of nearby terrestrial exoplanets candidates, and one example, Gliese 667 Cc is one such planet. At a distance of 23.6 light years, it has been declared the most Earth-like object known outside of our solar system ( <a href="http://www.mn.uio.no/astro/english/research/news-and-events/news/astronews-2012-02-17.html" target="_blank">source</a> ).I don&#039;t know what aliens you&#039;ve heard about, but the existence of Gliese 667 Cc nullifies the idea that there are no planets within 50 LY that have &quot;any chance&quot; of supporting a civilization capable of interstellar travel. It&#039;s obvious that there is at least some chance. At only half light speed the trip to Earth from there would take less than 50 years, well within our own lifespan. There may be even more planets with some chance of life within 50 LY. I suggest you avoid making absolutist claims in the future unless you enjoy being proven wrong.Regarding my reference to the Roswell Incident. It was used as an illustrative example to respond to your question why alien craft might crash and your response doesn&#039;t address the reasons given in that example. If you want to debate whether or not the Roswell Incident is about an actual alien craft, I suggest that you take it up with a Roswell believer. I&#039;m not one of them. I don&#039;t know with certainty what happened, and for that matter, neither do you. </blockquote>

[QUOTE="Randall, post: 226663, member: 2682"] [FONT=Arial][SIZE=4] The NASA article you linked to is a good article, but brief. If you take the time to investigate further, you'll find that there is a list of nearby terrestrial exoplanets candidates, and one example, Gliese 667 Cc is one such planet. At a distance of 23.6 light years, it has been declared the most Earth-like object known outside of our solar system ( [URL='http://www.mn.uio.no/astro/english/research/news-and-events/news/astronews-2012-02-17.html']source[/URL] ). I don't know what aliens you've heard about, but the existence of Gliese 667 Cc nullifies the idea that there are no planets within 50 LY that have "any chance" of supporting a civilization capable of interstellar travel. It's obvious that there is at least some chance. At only half light speed the trip to Earth from there would take less than 50 years, well within our own lifespan. There may be even more planets with some chance of life within 50 LY. I suggest you avoid making absolutist claims in the future unless you enjoy being proven wrong.[/SIZE][/FONT] [FONT=Arial]Regarding my reference to the Roswell Incident. It was used as an illustrative example to respond to your question why alien craft might crash and your response doesn't address the reasons given in that example. If you want to debate whether or not the Roswell Incident is about an actual alien craft, I suggest that you take it up with a Roswell believer. I'm not one of them. I don't know with certainty what happened, and for that matter, neither do you. [/FONT] [/QUOTE]

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