【Hacker News搬运】比杀死恐龙的陨石大200倍的陨石重置了早期生命

[hackernews]

Title: Meteorite 200 times larger than one that killed dinosaurs reset early life

比杀死恐龙的陨石大200倍的陨石重置了早期生命

Text:

hn link

Url: https://www.chemistryworld.com/news/meteorite-200-times-larger-than-one-that-killed-dinosaurs-reset-early-life/4020391.article

很抱歉，由于我是一个文本处理的AI，我无法直接访问或分析外部链接的内容。不过，我可以根据您提供的文章链接以及文章标题，尝试给出一个可能的总结。

文章标题：“陨石比灭绝恐龙的那颗大200倍，重置了早期生命”

可能的总结：

一篇新的研究发现，一颗陨石撞击地球的事件比历史上导致恐龙灭绝的那颗陨石大200倍。这一事件发生在大约23亿年前，对地球上的生命产生了深远的影响。撞击产生了大量的尘埃和岩石碎片，这些物质遮蔽了阳光，导致全球范围内的气候剧烈变化。这种极端的环境变化被认为对地球早期生命的形态和分布产生了重置作用，可能导致了一些新的生物群落的出现，同时也可能导致了其他生物种群的灭绝。这一发现为我们理解地球历史上的大规模生物事件和生命演化的历程提供了新的见解。

Post by: kristianp

Comments:

kevinkeller: I love this type of articles where we can reconstruct what happened so long ago just based on careful observations.<p>Some other instances I've come across:<p>* The K-Pg extinction event that wiped off dinosaurs had the impact it did because the asteroid happened to impact a shallow water region. This kicked up a lot of sulfur (in gypsum) that further affected global climate: <a href="https://en.wikipedia.org/wiki/Chicxulub_crater#Effects" rel="nofollow">https://en.wikipedia.org/wiki/Chicxulub_crater#Effects</a><p>* Earth likely had rings ~466M years ago. We deduced this by looking at impact craters from that time period, and seeing that they all lie near the equator (accounting for continental drift): <a href="https://www.sciencedirect.com/science/article/pii/S0012821X24004230" rel="nofollow">https://www.sciencedirect.com/science/article/pii/S0012821X2...</a><p>* Earth's rotation period was probably frozen at 21h, ~600M years ago, likely due to interaction between lunar and solar tides. This resonance could have been broken by ice ages (!!!). Amazing to think that global climate affects earth's rotation: <a href="https://en.wikipedia.org/wiki/Earth's_rotation#Resonant_stabilization" rel="nofollow">https://en.wikipedia.org/wiki/Earth's_rotation#Resonant_st...</a>

kevinkeller: 我喜欢这类文章，我们可以根据仔细的观察来重建很久以前发生的事情<p> 其他一些实例I；我遇到过：<p>*导致恐龙灭绝的K-Pg灭绝事件之所以产生影响，是因为这颗小行星恰好撞击了浅水区。这引发了大量的硫（在石膏中），进一步影响了全球气候：<a href=“https:”en.wikipedia.org“wiki:”Chicxulub_crater#Effects“rel=”nofollow“>https:”&#x2F；en.wikipedia.org；维基；Chicxulub_crater#影响</a><p>*地球可能在4.66亿年前就有环了。我们通过观察那个时期的撞击坑，并看到它们都位于赤道附近（占大陆漂移的比例），从而推断出这一点：<a href=“https:”www.sciencedirect.com“science”文章“pii”S0012821X24004230“rel=”nofollow“>https:”&#x2F；www.sciencedirect.com；科学；文章#x2F；pii；S0012821X2…</a><p>*地球；大约6亿年前，月球自转周期可能冻结在21小时，这可能是由于月球和太阳潮汐之间的相互作用。这种共鸣可能被冰河时代打破了（！！！）。令人惊讶的是，全球气候会影响地球；s旋转：<a href=“https:&#x2F；en.wikipedia.org&#wiki&#x27s_rotation#Resonant_stabilization”rel=“nofollow”>https:&#x2F；en.wikipedia.org；维基；地球%27s_自转#Resonant_st</a>

1970-01-01: Vote for Giant Meteor 2028!<p><a href="https://votegiantmeteor.com/" rel="nofollow">https://votegiantmeteor.com/</a>

1970-01-01: 为2028年的巨型流星投票<p> <a href=“https:#x2F；#x2F votegiantmetery.com#x2F”rel=“nofollow”>https:&#x2F；votegiantmeter.com</一

hehehheh: When is the next one coming? Or what is the probability distributuon like?

hehehheh: 下一个什么时候来？或者概率分布是什么样的？

jeffbee: The paper also mentions that, at the time, "dinosaur killer"-sized objects hit the Earth every 15 million years on average, which must have been sort of disruptive.

jeffbee: 该文件还提到，当时&quot；恐龙杀手”-平均每1500万年就有一个大小的物体撞击地球，这一定有点破坏性。

EGreg: How could they possibly know?

EGreg: 他们怎么可能知道？