1. NASA has started a 10-year search for extraterrestrial intelligence. 美国航空航天局已经启动了一个为期10年的寻找外星生物的项目。
2. British scientist Stephen Hawking is worried that any extraterrestrial life we find is likely to be a creature out of the movie Predator, not ET. 英国科学家斯蒂芬·霍金担心，我们发现的任何外星生命更可能是电影《铁血战士》而不是《ET外星人》里的生物。
3. The sense of an extraterrestrial experience is heightened by a line of yellow lights twinkling on the horizon, like a lone settlement on a hostile planet. 地平线上有黄色的光线在闪烁加深了在外星上的感觉，就像是一个充满敌意的星球上的一个孤独的定居点。
4. The real threat would come from the discovery of extraterrestrial intelligence. 真正的威胁会来自于外星智慧生物的发现。
5. The latest research will help astronomers distinguish between the two sources of methane in their search for extraterrestrial life. 这项最新发现将帮助天文学家在寻找外星生命过程中辨别两种来源不同的甲烷。
