其他6个星系最近都爆发了Ia型超新星——测量遥远宇宙距离时更可靠的量天尺。

The other six galaxies recently hosted Type ia supernovae that are reliable distance indicators for even farther measurements in the universe.

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星系ngc 4603由隶属于哈勃太空望远镜重大项目组的“河外星系量天尺工程”团队观测。

This galaxy was observed by a team affiliated with the HST Key Project on the Extragalactic Distance Scale.

youdao

星系ngc 4603由隶属于哈勃太空望远镜重大项目组的“河外星系量天尺工程”团队观测。

This galaxy was observed by a team affiliated with the HST Key Project on the Extragalactic Distance Scale.

youdao