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。
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.