為什么外星文明會(huì)花時(shí)間探訪(fǎng)地球?

為什么外星文明會(huì)花時(shí)間探訪(fǎng)地球?

Our Milky Way galaxy could be filled with alien civilizations, a new study claims, but we don’t know because they haven’t stopped by Earth for a visit in millions of years.

一項(xiàng)新的研究聲稱(chēng)，我們的銀河系可能充滿(mǎn)了外星文明，但我們不知道，因?yàn)樗鼈償?shù)百萬(wàn)年來(lái)都沒(méi)有被地球阻止過(guò)。

According to a study published last month in The Astronomical Journal, extraterrestrial life might be taking its time to fully explore the galaxy, even using the movement of star systems to make this type of journey easier.

根據(jù)上個(gè)月發(fā)表在《天文雜志》上的一項(xiàng)研究，外星生命可能會(huì)花時(shí)間來(lái)全面探索銀河系，甚至利用恒星系統(tǒng)的運(yùn)動(dòng)來(lái)簡(jiǎn)化這類(lèi)旅行。

The scientists’ work is the latest response to what’s known as the Fermi paradox, which wonders why we have yet to detect signs of alien life.

科學(xué)家們的工作是對(duì)“費(fèi)米悖論”的最新回應(yīng)。“費(fèi)米悖論”想知道為什么我們還沒(méi)有發(fā)現(xiàn)外星生命的跡象。

The new study claims the aliens may just be taking their time and being strategic.

這項(xiàng)新研究稱(chēng)，外星人可能只是在從容不迫地進(jìn)行戰(zhàn)略部署。

“If you don’t account for motion of stars when you try to solve this problem, you’re basically left with one of two solutions,” Jonathan Carroll-Nellenback, a computational scientist and the study’s lead author, told Business Insider. “Either nobody leaves their planet, or we are in fact the only technological civilization in the galaxy.”

計(jì)算科學(xué)家、該研究的主要作者喬納森·卡羅爾·內(nèi)倫巴克(Jonathan Carroll Nellenback)在接受《商業(yè)內(nèi)幕》(Business Insider)采訪(fǎng)時(shí)說(shuō)：“如果你在試圖解決這個(gè)問(wèn)題時(shí)不考慮恒星的運(yùn)動(dòng)，基本上就只剩下兩個(gè)解決方案中的一個(gè)了。”“要么沒(méi)有外星人離開(kāi)他們的星球，要么我們實(shí)際上是銀河系中唯一的文明。”

Stars, along with the planets around them, orbit the center of the Milky Way on unique paths at varying speeds, and they sometimes zip past one another as they do, Business Insider reports.

據(jù)《商業(yè)內(nèi)幕》報(bào)道，恒星及其周?chē)男行且圆煌乃俣妊刂?dú)特的軌道繞銀河系中心運(yùn)行，它們有時(shí)也會(huì)像這樣彼此擦肩而過(guò)。

Carroll-Nellenback’s study points out that the aliens could simply be waiting for their next destination to come closer to them.

卡羅爾·內(nèi)倫巴克的研究指出，外星人可能只是在等待下一個(gè)靠近他們的目的地。