From the Earth Greetings 来自地球的问候

课前问题

Which life forms are most likely to develop on a distant planet?

哪些生命形式最有可能在遥远的行星上发展？

课文首句

Recent developments in astronomy have made it possible to detect planets in our own Milky Way and in other galaxies.

天文学的最新发展使得在我们自己的银河系和其他星系中探测行星成为可能。