planetary nebula 英[ˈplænɪˌteri: ˈnebjələ]美[ˈplænɪˌtɛri ˈnɛbjələ]释义 常用 牛津词典 释义 行星状星云; 双语例句 全部 1. Many objections can be raised to this picture of planetary nebula formation. 形成行星状星云的这一图象可能会引起许多异议. ...
Planetary nebulaThe ejected outer layers of stars born with mass between approximately 1 and 8 times the solar mass.…De Marco, Orsola
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Planetary nebula, any of a class of bright nebulae that are expanding shells of luminous gas expelled by dying stars. They have a relatively round compact appearance rather than the chaotic patchy shapes of other nebulae—hence their name, which was give
Planet Nine - Planetary Nebula
A planetary nebula is created when a star ejects its outer layers after it has exhausted its fuel. The core remains very hot causing the outer layers of gas to glow. What forms a planetary nebula? A planetary nebula is formed when a low-mass star reaches the end of its life. When the...
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A planetary nebula is formed by a dying star. A red giant becomes unstable, releasing pulses of gas. These gases form a sphere around the dying star and are ionized by the ultraviolet radiation the star releases. These emissions cause the gas cloud to glow in distinctive colors. What is th...
compact nebula 致密星云 Hubble Nebula 哈勃星云 variable nebula 变光星云 相似单词 nebula n. 星云,云翳 planetary a.【术语】 行星的 inter planetary adj.星际间的 1.the space between different planets; 最新单词 grid voltage什么意思及同义词 栅极电压 grid variometer的意思 栅极可变电感器 gri...
I'm living in Norway (Northern Hemisphere) and don't know if there is a Planetary Nebula on this list, which is only visible from the Southern Hemisphere. I started to search for this on the internet, but it seems this is not always easy. ...