For the last few decades, the modern scientific endeavor known as astrobiology has been seeking to determine whether or not all of this – life, death, and evolution – has happened elsewhere in the cosmos. Humans have long asked this question, but the evidence – the raw data – was lacking.
过去几十年来，被称为天体生物学的现代科学分支一直在试图确定所有这一切——生命、死亡和进化——是否在宇宙其他地方也发生过。人类很早就已提出过这个问题，但却找不到相应的证据——也就是原始资料。