nebula
nebula 英 [ˈnebjələ] 美 [ˈnɛbjələ]
n. 星云；角膜云翳
名词复数:nebulae
- A nebula is a massive cloud of gas and dust in outer space. A nebula is sometimes the birthplace of stars, such as the Orion Nebula where new stars — a youthful million years old — are still forming.
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- n. 星云；角膜云翳
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1. As the nebula collapsed because of its gravity, it spun faster and flattened into a disk.
随着由于重力引起的星云坍缩，它旋转得越来越快，并变成了盘状。
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2. This nebula is a bubble, and it's a bubble because intense blasts of stellar wind and radiation for a nearby star have cut through the dust and hollowed out the middle.
此星云呈泡沫状，之所以如此，是因为附近一颗恒星发生剧烈爆炸，产生的辐射和恒星风从尘埃云中间穿过，掏空了中间部位。
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3. As for the spiral itself, current supposition is that this is the result of a star in a binary star system entering the planetary nebula phase, when its outer atmosphere is ejected.
至于螺旋本身，最近的推测是这是双子星系统中的一个恒星进入行星星云阶段的结果，此时它的外层大气会被喷出。
- nebula (n.) early 15c., nebule "a cloud, mist," from Latin nebula "mist, vapor, fog, smoke, exhalation," figuratively "darkness, obscurity," from PIE root *nebh- "cloud."
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