stellar pulsation

例句：

1. 1. The star'sbrightness is due to the stellarpulsation of its core.
   这颗星的亮度是由于其核心的恒星脉动。
2. 2. Astronomers have observed stellarpulsations in distant galaxies.
   天文学家已经观察到遥远星系中的恒星脉动现象。
3. 3. The study of stellarpulsations has led to new insightsinto the formation of stars.
   对恒星脉动的研究为理解恒星形成提供了新的见解。