tiān / wén / xué / jiā / zài / xià / yè / yòng / wàng / yuǎn / jìng / guān / cè / jiāo / hú / xīng / yún

天文学家在夏夜用望远镜观测礁湖星云。

Astronomers observe the Lagoon Nebula with telescopes on summer nights.