编辑-地球科学江南体育网页版堆栈交换江南电子竞技平台

你不是登录。你的编辑将被放置在一个队列,直到同行评议。

我们欢迎编辑,使读者更容易理解和更有价值。因为社区成员审查编辑,请尽量使文章更好比你怎么发现,例如,通过修正语法或添加额外的资源和超链接。

牧师

为什么没有在太阳系内部tholins吗?

有大量的二氧化碳和辐射整个太阳系,为什么一个现象与外行星吗?

回答

Tholins主要是聚合的碳氢化合物,和关键原材料形成甲烷,二氧化碳。物理和化学的结合原因下面提到的,只有不多的甲烷是对主要的轨道内太阳能基于触摸屏的尸体。* *太热来处理* *[图表](https://physics.stackexchange.com/questions/615311/what-is-this-atmospheric-escape-chart-actually-showing)显示了逃跑的速度和温度的组合在一巴压力级别在不同的太阳系的身体,随着乐队展示最轻的气体,可以保留。[![在这里输入图像描述][1]][1]中五个主要围绕身体内太阳系,我们的月球和水星出现的图,只有气沉重如氙(或二氧化硫,图中未显示)可能被保留;甲烷将他光足以逃脱给有限的重力和温度相对温暖的身体。火星,这是一个更大规模,更近,能够保持氮(发现微量组分的氛围);考虑到可能的不确定性图表也许可以保留甲烷。然而,火星上的甲烷峰值也只是暂时的,局部峰值不加起来是一个重要的长期的全球影响力。甲烷是逃跑或者它被迅速消耗,带来了第二个障碍对甲烷的存在和tholin形成太阳系内部。 **Burning up** Earth and Venus have enough gravitational heft to retain methane at their 1-bar levels, and Mars is close to the borderline ... if the local chemistry is favorable. However, methane is prone to oxidation, and there is evidence that the methane is consumed by this reaction on all three bodies that might otherwise retain it. Going back to Mars, discussed above, that planet has little or no elemental oxygen in its atmosphere. However, mineral evidence indicates oxidizing conditions on Mars. This includes most of the iron present in these minerals being oxidized to the +3 oxidation state, as in the iron oxide that reddens its surface and [other iron(III) minerals](https://space.stackexchange.com/questions/41819/how-did-spirit-and-opportunity-identify-ferric-sulfate-and-jarosite-on-mars) found by rovers on Mars. In addition, nitrogen has been found on an oxidized state as [nitrates in Martian rock](https://www.nasa.gov/content/goddard/mars-nitrogen). Earth is more straightforward. Even without burning as in a flame, methane is destroyed over time by oxygen in the atmosphere, its carbon ending as carbon dioxide. Which leaves Venus. Sulfuric acid and associated sulfur oxides also oxidize methane in the atmosphere; again most of the carbon is converted to carbon dioxide (there is a little carbon monoxide) and methane is [not reported even at parts per billion levels](https://en.wikipedia.org/wiki/Atmosphere_of_Venus). Sulfate salts can also be oxidizing to organic matter and are actually used in this way by some anaerobic bacteria on Earth. [1]: https://i.stack.imgur.com/A0sEf.png

编辑总结

取消

添加一个评论 |

正确的小错误或错误
澄清的意思,而不更改它
添加相关资源或链接
总是尊重作者的意图
不使用编辑与作者回复

创建代码用引号”或式子~篱笆
' ' '
像这样
' ' '
添加语言标识符来突出显示的代码
”“python
def函数(foo):
打印(foo)
' ' '
把段落之间的回报
在结束linebreak添加2个空间
_italic_或* *的* *
报价将>开始的
做链接(尽量使用https)
< https://example.com >
(例子)(https://example.com)
< a href = " https://example.com " > < / >示例
MathJax方程罪\ \ ^ 2θ美元

格式帮助»
回答帮助»

MathJax帮助»