发射星云
- 网络Emission nebula;emission nebulae
发射星云-
左上角的发射星云很有名，部分原因是因为它跟地球上的北美洲类似。
This emission nebula on the left is famous partly because it resembles Earth 's continent of North America .
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大多数人都分不清发射星云和环状星云之间的区别。
So most people have no idea of the difference between like , an emission nebula and a planetary nebula .
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有些星云是由反射星云和发射星云结合在一起的，例如三裂星云。
Some nebulae are made up of both reflection and emission components such as the Trifid Nebula .
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5500光年远处，猫爪星云是一个发射星云，红色来源于其丰富的电离状态的氢原子。
At5,500 light years distant , Cat 's Paw is an emission nebula with a red color that originates from an abundance of ionized hydrogen atoms .