Angular Velocity of a Nebula Accretion Disk

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SUMMARY

The discussion focuses on the angular velocity of a nebula accretion disk, specifically how particles within the disk attain this velocity. It is established that the solar system formed approximately 4.5 billion years ago from a supernova's nebula, which clumped together due to gravitational forces. The inquiry centers on the mechanisms that enable these particles to spin, despite gravity primarily pulling inward. The conversation suggests that additional forces or dynamics are at play in the formation of the spinning accretion disk.

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  • Understanding of gravitational forces in astrophysics
  • Familiarity with the concept of accretion disks
  • Basic knowledge of stellar formation processes
  • Awareness of angular momentum principles
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  • Explore the dynamics of accretion disks in stellar formation
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Vodkacannon
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[SOLVED]Angular Velocity of a Nebula Accretion Disk

[SOLVED]
According to astronomy our solar system was created about 4.5 billion years ago when the nebula of an exploded supernova accreted to form a stellar mass known as our sun.

They say that this "accretion disk" or mass of clumping particles spun around due to its angular velocity.

Now I ask you how did those particles attain an angular velocity?


It's not like gravity pulls side ways. If there's a 3D field of gas and dust suspended in space, the particles clump together very slowly because of the fundamental gravitational force. somewhere in the center it starts to become dense and then even more particles move there.

Correct me if I'm wrong but gravity doesn't pull sideways, it pulls inward towards the largest collection of mass, just like here on earth, I'm being pulled on the y axis.

There has to be something I'm missing that causes this particle disk to spin.
 
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