他们使用赫歇尔太空望远镜来观测哈特利2号，这颗来自柯伊伯带【2】的彗星。

They used the Herschel space telescope to examine Comet Hartley 2, which originated in the Kuiper Belt.

youdao

他们使用赫歇尔太空望远镜来观测哈特利2号，这颗来自柯伊伯带【2】的彗星。

They used the Herschel space telescope to examine Comet Hartley 2, which originated in the Kuiper Belt.

youdao