{"id":732,"date":"2014-07-05T20:55:48","date_gmt":"2014-07-06T02:55:48","guid":{"rendered":"http:\/\/www.angrygames.com\/?p=732"},"modified":"2014-07-05T20:55:48","modified_gmt":"2014-07-06T02:55:48","slug":"fermi-paradox-why-havent-we-encountered-life-beyond-earth","status":"publish","type":"post","link":"https:\/\/www.angrygames.com\/?p=732","title":{"rendered":"Fermi Paradox: Why haven&#8217;t we encountered life beyond Earth?"},"content":{"rendered":"<p>Just read a really interesting article about why humans have yet to encounter any life beyond our home planet: <a title=\"Fermi Paradox\" href=\"http:\/\/waitbutwhy.com\/2014\/05\/fermi-paradox.html\" target=\"_blank\">Fermi Paradox<\/a><\/p>\n<p><em>&#8220;A really starry sky seems vast\u2014but all we\u2019re looking at is our very local neighborhood. On the very best nights, we can see up to about 2,500 stars (roughly one hundred-millionth of the stars in our galaxy), and almost all of them are less than 1,000 light years away from us (or 1% of the diameter of the Milky Way). &#8220;<\/em><\/p>\n<p>&#8230;..<\/p>\n<p><em>&#8220;When confronted with the topic of stars and galaxies, a question that tantalizes most humans is, \u201cIs there other intelligent life out there?\u201d Let\u2019s put some numbers to it (if you don\u2019t like numbers, just read the bold)\u2014<\/em><\/p>\n<p><em>As many stars as there are in our galaxy (100 \u2013 400 billion), there are roughly an equal number of galaxies in the observable universe\u2014so for every star in the colossal Milky Way, there\u2019s a whole galaxy out there. All together, that comes out to the typically quoted range of <strong>between 10<sup>22<\/sup> and 10<sup>24<\/sup> total stars<\/strong>, which means that for <a href=\"http:\/\/www.hawaii.edu\/suremath\/jsand.html\" target=\"_blank\">every grain of sand on Earth<\/a>, there are 10,000 stars out there.<\/em><\/p>\n<p><em>The science world isn\u2019t in total agreement about what percentage of those stars are \u201csun-like\u201d (similar in size, temperature, and luminosity)\u2014opinions typically range from 5% to 20%. Going with the most conservative side of that (5%), and the lower end for the number of total stars (10<sup>22<\/sup>), gives us 500 quintillion, or <\/em><strong><em>500 billion billion sun-like stars.&#8221;<\/em> <\/strong><\/p>\n<p>Read the rest here: <a title=\"Fermi Paradox\" href=\"http:\/\/waitbutwhy.com\/2014\/05\/fermi-paradox.html\" target=\"_blank\">Fermi Paradox<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Just read a really interesting article about why humans have yet to encounter any life beyond our home planet: Fermi Paradox &#8220;A really starry sky seems vast\u2014but all we\u2019re looking at is our very local neighborhood. On the very best &hellip; <a href=\"https:\/\/www.angrygames.com\/?p=732\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[375,370,369,367,372,371,310,227,368,309,374,373],"_links":{"self":[{"href":"https:\/\/www.angrygames.com\/index.php?rest_route=\/wp\/v2\/posts\/732"}],"collection":[{"href":"https:\/\/www.angrygames.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.angrygames.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.angrygames.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.angrygames.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=732"}],"version-history":[{"count":1,"href":"https:\/\/www.angrygames.com\/index.php?rest_route=\/wp\/v2\/posts\/732\/revisions"}],"predecessor-version":[{"id":733,"href":"https:\/\/www.angrygames.com\/index.php?rest_route=\/wp\/v2\/posts\/732\/revisions\/733"}],"wp:attachment":[{"href":"https:\/\/www.angrygames.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=732"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.angrygames.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=732"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.angrygames.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}