The new planet, called Gliese 581-g, is different.

这个叫做Gliese 581g的行星很特别。

Gliese 581 is a red dwarf star 20.5 light-years from Earth.

格利泽581是一颗红矮星距离地球20.5光年。

Whether Gliese 581g is an actual planet remains an open question.

Gliese 581g是否确实是一颗行星依然是个谜。

He said there are two ways to interpret the signals from Gliese 581.

他说有两种方法可以检验葛利斯581的信号。

The paper reports the discovery of two new planets around Gliese 581.

论文提到了Gliese 581附近新发现的两颗行星。