Why Haven’t We Visited By Aliens Yet?为什么我们不能访问的外国人吗？

August 19, 2006 · Filed Under 2006八月19文章属于 Uncategorized庆 · 5 Comments 5评论

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It is probable (but not definite) that civilizations evolve at different rates.这是可能的（但不明确） ，文明演变的不同利率。 The hominid species spent a good million years just running around like an animal before we developed the mutation that allows us to imagine the future and make decisions that are not instinctual.原始人种的花了好万年只是奔跑的动物一样，我们制定了突变，使我们能够想象的未来和作出决定，不是本能。 So, even if civilizations were to develop on many different planets, they could be seperated in TIME by a few million years easily.因此，即使文明发展在许多不同的行星，它们可以分开的时候以几百万年容易。

On top of that, before you send out an expedition to a planet in search of life, you’d want to receive a signal from them.最重要的是，在您发送了一个远征行星寻找生命，你要接收的信号来自他们。 We’ve only been broadcasting into space for some 40 years now… and 40 light-years is pretty small in the grand scheme of things.我们只被送入太空广播约40年...现在， 40光年，是非常小的大计划中的事情。 Even if another civilization received our signals today, it would take them 40 years minimum to respond, barring some faster-than-light communication technology, and probably much longer to actually get here.即使再收到我们的文明信号的今天，他们将采取40年来的最低作出反应，阻止某些快于光通信技术，甚至更长时间，以实际来到这里。 With our current rocket technology (~40 miles/sec exiting Earth’s sphere of influence), it would take us a good 4500 years just to get 1 light-year away.我国目前的火箭技术（ 〜 40英里/秒飞离地球的势力范围） ，它将使我们一个很好的四千五百年只是为了送1光年以外。 I think the nearest star is about 4 light years away – so that’sa long time!我认为最近的恒星约400光年-所以这是一个很长的时间！

Intelligent life is most likely out there somewhere (or were, or will be), but I doubt we’ll run across one anytime soon.智能生命是最有可能有某个（或正在或将要） ，但我怀疑我们会遇到一个短期。 The distances and times are too great.距离和时间是太大。 However, unintelligent aliens (microbes, or maybe sea-creatures) we might find in the next 100-200 years on the various moons and planets in our solar system.然而，愚蠢的外国人（微生物，或者海洋生物） ，我们可能会发现在未来100-200年的各种卫星和行星在我们的太阳系。

Via通过 Google Blogoscoped谷歌Blogoscoped

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