A nebula spins primarily due to the conservation of angular momentum. As gas and dust in the nebula collapse under gravity, any initial rotation or slight asymmetries are amplified, causing the material to rotate faster as it contracts. Additionally, interactions with nearby celestial bodies or the influence of magnetic fields can contribute to the nebula's rotation. This spinning motion is essential for the formation of stars and planetary systems within the nebula.
Gravity.
Sort of. Its just part of a nebula, and the collapsing "ball" must convert itself into a disk (the spin and the local gravity field will do that). To get planets you need something solid (i.e. dust. the chief aggregators are those elements which have polarity, thus metals, ice, and stone {silicon oxide}) to condense and aggregate (thus the first stars had no planets). The "balls" don't spin unless two or more "planetoids" hit each other in such a way to produce a spin
The force of gravity caused the solar nebula to contract. As the nebula collapsed under its own gravity, it began to spin and flatten into a disk shape, eventually forming the Sun and the planets. Additionally, the heat and pressure generated by the gravitational contraction contributed to the collapse of the nebula.
Gravity is the force that causes nebulae to collapse. As particles within the nebula are pulled together by gravity, they begin to clump and form denser regions. This leads to the eventual formation of stars and planetary systems within the collapsing nebula.
Gravity.
An explosion from outside the nebula
Gravity.
Sort of. Its just part of a nebula, and the collapsing "ball" must convert itself into a disk (the spin and the local gravity field will do that). To get planets you need something solid (i.e. dust. the chief aggregators are those elements which have polarity, thus metals, ice, and stone {silicon oxide}) to condense and aggregate (thus the first stars had no planets). The "balls" don't spin unless two or more "planetoids" hit each other in such a way to produce a spin
I think it would be impossible to argue that it does NOT spin. As part of the Milky Way, the Horsehead Nebula is orbiting around the center of the galaxy. Since that is true, it would be perceived as having a spin either sidereally or synodically or both, and it may be spinning around its own axis as well. Even if it isn't, it is spinning from some valid point of view.
Gravity is the force that causes nebulae to collapse. As particles within the nebula are pulled together by gravity, they begin to clump and form denser regions. This leads to the eventual formation of stars and planetary systems within the collapsing nebula.
The force of gravity caused the solar nebula to contract. As the nebula collapsed under its own gravity, it began to spin and flatten into a disk shape, eventually forming the Sun and the planets. Additionally, the heat and pressure generated by the gravitational contraction contributed to the collapse of the nebula.
Gravity.
Spin causes electrons to have an intrinsic magnetic moment, leading to the phenomenon of electron spin. This property allows electrons to interact with magnetic fields and is crucial for understanding the behavior of atoms and molecules in chemistry and physics.
the starter
A key force that causes a nebula to contract is gravity. The mass of the gas and dust within the nebula generates gravitational attraction, pulling particles closer together. As these particles coalesce, their density increases, leading to further gravitational collapse. Additionally, other factors such as shock waves from nearby supernovae can trigger the contraction process by compressing the nebula.
The main forces acting on a nebula are gravity, which causes the nebula to collapse and form stars, and radiation pressure, which can push material away from the forming stars. Additionally, magnetic fields can play a role in shaping the structure and dynamics of a nebula.
backfiring.