If we discovered evidence of alien life, would we even realise it? Life on other planets could be so different from what we’re used to that we might not recognise any biological signatures that it produces.

如果我們發現了外星生命的證據，我們會意識到嗎？ 其他星球上的生命可能與我們習以為常的生命截然不同，以至於我們可能無法識別它產生的任何生物特徵。

Of course, some people firmly believe that aliens do exist. If aliens exist and could travel here, they would obviously have advanced technology, more advanced than the technology humans have developed. After all, it has only been since 2013 that the first human-made object even left our solar system. What kind of technology would aliens need in order to travel all the way to our solar system? Wouldn’t it be interesting to find out?

當然，也有人堅信外星人確實存在。 如果外星人存在，並且能夠來這裡旅行，他們顯然擁有先進的科技，比人類發展的科技還要先進。 畢竟，直到 2013 年，第一個人造物體才離開了我們的太陽系。 外星人需要什麼樣的技術才能一路旅行到我們的太陽系？ 找出答案不是很有趣嗎？