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1·American Association of Variable Star Observers.

美国变星观测者协会。

2·His first great discovery was made when he recognized a Cepheid variable star.

他的首次重大发现产生于他认识了一颗造父变星的时候。

3·Young variable star RY Tauri is emerging from a yellowish cocoon of dust near top center.

最上面正中一年轻的变星正在破茧而出。

4·The smaller yellowish nebula (NGC 6729) surrounds young variable star R Coronae Australis.

娇小而微微泛黄的星云NGC 6729环绕在年轻变星南冕座R的周围。

5·Welcome to the American Association of Variable Star Observers (AAVSO) Nova Search program.

欢迎访问美国变星协会新星搜索组。

6·A type of variable star whose period of variation is tightly related to its intrinsic luminosity.

变星的一种，它的固有光度和它的光变周期有着紧密的联系。

7·For 100 years astronomers have paid particular attention to a class of variable star known as the Cepheids.

过去100年来，天文学家特别注意一类称作“仙王座变光星”的恒星。

8·The tiny but intriguing yellowish arc visible near the blue nebulae marks young variable star R Coronae Australis.

在蓝色星云附近，微小但迷人的微黄色弧状可见物标出了年轻可见恒星南冕座R星的位置。

9·The sun is not considered a variable star, but it does undergo periodic changes in activity known as the sunspot cycle.

太阳是不被认为是变星，但它的变化进行定期的活动被称为太阳黑子周期。

10·They discovered almost 800 Cepheid variable stars, a special class of pulsating star used for accurate distance measurement.

他们发现了差不多800个造父变星，一种用于准确测量距离的特殊变星。