1、This allowed the host star to be identified as a red dwarf star located 19,000 light-years away.
這一發(fā)現(xiàn)終于確定了主要恒星——發(fā)出光線的那個恒星——的身份，就是紅矮星，距離我們19000光年。

2、Gliese 581 is a red dwarf star 20.5 light-years from Earth.
格利澤581是一顆紅矮星距離地球20.5光年。

3、The planet orbits a dim red dwarf star 20 light years from Earth called Gliese 581.
這顆行星所繞行的是一顆暗淡的紅矮星，距地球20光年遠，名為Gliese 581。