TRAPPIST-1 is a planetary system a few dozen light-years away whose discovery was announced in early 2017 .
2017年初有消息称发现了一个距地球几十光年的行星系，这就是特拉比斯特1号。
The cluster of planets orbit a dim dwarf star , just barely the size of Jupiter , called Trappist-1 .
这群行星围绕的暗矮星和木星差不多大，被称为特拉普1号。
TRAPPIST-1