11月 1 2021

外星人在哪里？

宇宙應(yīng)該充滿了外星人

納瓦爾： 讓我們簡單談?wù)?a target="_blank">費米悖論，因為我們談?wù)摰氖峭庑侨?。對于不知道的聽眾來說，介紹一下：恩里科·費米是一位著名的物理學(xué)家，曾參與曼哈頓計劃，他說：“外星人在哪里”？

宇宙如此之大，可能有很多不同行星能夠支持某種或另一種生命，我們不是應(yīng)該看到它們才對嗎？

布雷特： 幾乎每顆恒星周圍都有一群行星，很像我們的太陽系。像銀河系這樣的典型星系中存在的恒星數(shù)量大約是 2000 億顆，盡管估計高達(dá) 4000 億顆左右，我們可以看到的星星數(shù)量約為 2000 到 3000 億。

可觀測的宇宙只是整個宇宙的一小部分，這意味著行星的數(shù)量絕對是天文數(shù)字。

當(dāng)然，鑒于這些數(shù)字，不僅有適合生命存在的行星，而且宇宙中應(yīng)該充滿比我們先進(jìn)得多的文明、或落后于我們的文明，還有一些文明與我們相似。

那么他們在哪里呢？

Nov 1 2021Where Are the Aliens?The universe should be teeming with aliens

Naval:?Let’s talk briefly about theFermi paradox?since we’re talking about aliens. For listeners who don’t know,Enrico Fermi?was a famous physicist who was part of the?Manhattan Project. He said, “Where are the aliens?”

The universe is so large and there are probably so many planets that are capable of supporting life of some kind or another. Shouldn’t we have seen them by now?

Brett:?Around almost every star there is a contingent of planets much like our own solar system. The number of stars that exist within a typical galaxy like the Milky Way is something like 200 billion, although the estimates go up to about 400 billion. The number of galaxies that we can see is around 200 to 300 billion.

The observable universe is just a small fraction of the entire universe, which means that the number of planets is absolutely astronomical.

Surely, given these numbers, it has to be the case that there are not only planets out there that are suitable for life but that the universe should be teeming with civilizations far more advanced than ours, less advanced than ours, and some that are similar in advancement to ours.

So where are they?

馬麗：一花一世界，一葉一菩提。宇宙很大。在宇宙中，太陽系或者地球，相當(dāng)于宇宙中的一只螞蟻、一顆塵埃，人類就是宇宙的一個單細(xì)胞、蛋白質(zhì)、甚至只是某個氨基酸。so,地球只是宇宙搭建的千千萬萬積木場之一，并被賦予了風(fēng)雨雷電、山川河流、喜怒哀樂、愛恨情仇，讓人類玩耍起來更有體驗感，它被設(shè)定了一些初始設(shè)置、游戲（自然）規(guī)則、天道，但宇宙并沒有給地球邊框，人類小伙伴們可以盡情蹦跶、折騰，來享受這個無限的地球&星際游樂場。