Undergrad Solar System Origins: Angular Momentum Problem?

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The discussion centers on the angular momentum problem associated with the nebular hypothesis of solar system formation, where the sun contains 99.9% of the solar system's mass but only 1% of its angular momentum. This discrepancy raises questions about the validity of the nebular hypothesis, as it suggests a fundamental flaw in the predicted relationship between mass and angular momentum. Participants seek clarity on current solutions to this issue, including leading explanations and relevant literature. A contributor highlights that the distribution of angular momentum may be influenced by the distance of bodies from the sun, suggesting that outer objects contribute more to the total angular momentum despite their smaller mass. The conversation emphasizes the need for accessible resources to better understand this complex topic.
eliot6492
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Hi guys,

This is basically a quick question to hopefully find some pointers on a topic I've been browsing the internet on to not much success. Basically the topic I'm trying to find more information on is the angular momentum problem with the "nebular hypothesis" of the formation of our solar system..(that being that whilst the sun makes up almost 99.9% of the solar systems mass it only accounts for around 1% of its total angular momentum). If I'm not mistaken the primitive theory that the solar system formed from a nebular predicts that the angular momentum held by each body should roughly conform to their mass proportions, thus making this a fundamental flaw in the theory.

Basically I've been scanning the internet trying to find the eventual solutions to this issue but everything I come across seems either vague or difficult to find further information on. I was hoping that someone more informed on this particular issue might be able to point me in the direction of the current leading explanation(s), who is responsible for them, any texts/articles that I might read about them on and if possible a simple explanation.

I'm a third year physics undergraduate so do have a decent understanding of many basic aspects of physics(understand most technical terms etc).

Thanks in advance

Eliot
 
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Do you mean the sum of the local angular momentums of each body or the angular momentum of the solar system as a whole? If the latter, then personally I would be astounded were it otherwise since the sun is all very close to the center of mass of the solar system (basically it IS the center of mass) but other objects are WAY farther out and so contribute more relative to their mass because of their distance.
 
UC Berkely, December 16, 2025 https://news.berkeley.edu/2025/12/16/whats-powering-these-mysterious-bright-blue-cosmic-flashes-astronomers-find-a-clue/ AT 2024wpp, a luminous fast blue optical transient, or LFBOT, is the bright blue spot at the upper right edge of its host galaxy, which is 1.1 billion light-years from Earth in (or near) a galaxy far, far away. Such objects are very bright (obiously) and very energetic. The article indicates that AT 2024wpp had a peak luminosity of 2-4 x...

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